Let us understand the meaning of the given words:-

• An award = a prize for something that someone has done.

• A reward = a thing that you are given because you have done something good, worked hard etc.

• A prize = an award that is given to a person who wins a competition, race etc. or who does very good work.

• A profit = the money that you make in business or by selling things, especially after paying the costs involved.

Now let's find out the correct fit for the blank:

• “An award” and “a prize” both are nouns. They are used to show a mark of recognition for excellence in certain field. Thus, options A and C are incorrect.

• “A profit” as a noun means money made by someone after paying the costs involved. Thus, option D is incorrect.

• "A reward" as a noun means a thing that is given to someone because someone has done something good or worked hard. Here in the given sentence, it is used to mention that parents will reward whosoever gives the information about their lost child. In this sentence, the act of “providing information about the child” is a good work that is done by someone on the request of someone else (i.e. “parents”).

Thus, "a reward" becomes the correct word to fill in the blank.

Thus, the correct sentence will be:

The parents of the lost boy have announced a reward for information about their child.

Hence, option B is the correct answer.

Let us understand the meaning of the given words:-

* In = used to show at a point within an area or a space.

* At = used to say when something happens.

* On = used to show “in or into a position covering, touching or forming part of a surface”.

* For = used to show purpose or function.

Now let's find out the correct fit for the blank:

* “In” as a preposition is used to show at a point within an area or a space. Thus, option A is incorrect.

* “On” as a preposition is used in context of “in or into a position covering, touching or forming part of a surface”. Thus, option C is incorrect.

* “For” as a preposition is used to show purpose or function. Thus, option D is incorrect.

* "At" as a preposition is used to show when something happens. Here in the given sentence, it is used to mention the time when “I” leave the house i.e. “at eight o’ clock”.

Thus, "At" becomes the correct word to fill in the blank.

Thus, the correct sentence will be:

In the morning I leave my house at eight o'clock.

Hence, option B is the correct answer.

Let us understand the meaning of the given words:-

• Follows = to come or go after or behind someone/something.

• Keeps = to do what you have promised to do

• Sticks = to fix something to something else, usually with a sticky substance.

• Supports = to help or encourage someone/something by saying or showing that you agree with them/it.

Now let's find out the correct fit for the blank:

• “Follows” means to go behind someone/something. Thus, option A is incorrect.

• “Sticks” means to fix something. Thus, option C is incorrect.

• “Supports” means to help or encourage someone. Thus, option D is incorrect.

• "Keeps" as a verb means to do what someone has promised to do. Here in the given sentence, it is used to mention that “mom” always do what she has promised to do.

Thus, "Keeps" becomes the correct word to fill in the blank.

Thus, the correct sentence will be:

When my mother makes a promise, she always keeps it.

Hence, option B is the correct answer.

Let us understand the meaning of the given words:-

* Are growing = is the structure of verb used in present continuous tense.

* Will grow = is the structure of verb used in simple future tense.

* Grow = is the first form of verb. It means to increase in size, number, strength or quality.

* Grew = is the second form of verb “grow” used in simple past tense.

Now let's find out the correct fit for the blank:

* “Are growing” is the structure of verb used in present continuous tense but we need future tense in the filler. Thus, option A is incorrect.

* “Grow” is the first form of verb used in simple present tense but we need future tense in the filler. Thus, option C is incorrect.

* “Grew” is the second form of verb “grow” used in simple past tense but we need future tense in the filler. Thus, option D is incorrect.

* "Will grow" is the structure of verb used in simple future tense. It shows what is going to happen in the future. Here in the given sentence, time word “next week” necessitates the use of future tense in the filler. “Will grow” shows that there is possibility of growth in seeds by following week.

Thus, "Will grow" becomes the correct word to fill in the blank.

Thus, the correct sentence will be:

I am sure that my seeds will grow by next week.

Hence, option B is the correct answer.

Let us understand the meaning of the given words:-

• Health = the condition of a person’s body or mind.

• Condition = the state that something is in.

• Size = how large or small a person or thing is.

• Conduct = a person’s behaviour in a particular place or in a particular situation.

Now let's find out the correct fit for the blank:

• “Health” is used in the context of “condition of a person’s body”. Thus, option A is incorrect.

• “Size” is used in the context of “how large or small a person or thing is”. Thus, option C is incorrect.

• “Conduct” is used in the context of “person’s behaviour”. Thus, option D is incorrect.

• "Condition" is used to show the state of something. Here in the given sentence, it is used to show the “good” state of bike.

Thus, "Condition" becomes the correct word to fill in the blank.

Thus, the correct sentence will be:

There is no problem with your bike; it's in good condition.

Hence, option B is the correct answer.

Let us understand the meaning of the given words:-

* Hungered = (verb) to have strong desire or need for something/someone.

* Starved = (verb) to suffer or die because you do not have enough food to eat; to make someone suffer or die in this way.

* Damaged = (verb) to have a bad or harmful effect on something/someone.

* Collapsed = (verb) to fall down or fall in suddenly often after breaking apart.

Now let's find out the correct fit for the blank:

* “Hungered” as a verb means to have strong desire or need for something/someone. Thus, option A is incorrect.

* “Damaged” as a verb means to have a bad or harmful effect on something/someone. Thus, option C is incorrect.

* “Collapsed” as a verb means to fall down or fall in suddenly often after breaking apart. Thus, option D is incorrect.

* "Starved" as a verb means to suffer or die because you do not have enough food to eat; to make someone suffer or die in this way. Here in the given sentence, it is used to show that millions of people died during acute famine because they do not have enough food to eat.

Thus, "Starved" becomes the correct word to fill in the blank.

Thus, the correct sentence will be:

Millions of people starved during the acute famine of Odisha.

Hence, option B is the correct answer.

Let us understand the meaning of the given words:-

• Success = the fact that you have achieved something that you want and have been trying to do or get.

• Experience = the knowledge and skill that you have gained through doing something for a long period of time.

• Service = a system that provides something that the public needs.

• Research = a careful study of a subject, especially in order to discover new facts or information about it.

Now let's find out the correct fit for the blank:

• “Success” means achieving something that you have desired. Thus, option A is incorrect.

• “Experience” means knowledge and skill gained over a period of time. Thus, option B is incorrect.

• “Service” means to provide something. Thus, option C is incorrect.

• "Research" means a careful study of a subject, especially in order to discover new facts or information about it. Here in the given sentence, it is used to mention that it was after years of careful study, the world’s first test tube baby was born in 1978.

Thus, "Research" becomes the correct word to fill in the blank.

Thus, the correct sentence will be:

After many years of research the world's first test tube baby was born in 1978.

Hence, option D is the correct answer.

Let us understand the meaning of the given words:-

* Insisted = (verb) to demand that something happen or that someone agree to do something.

* Informed = (verb) to tell someone about something especially in an official way.

* Told = (verb) to give information to someone by speaking or writing.

* Warned = (verb) to tell someone about something especially something dangerous or unpleasant that is likely to happen.

Now let's find out the correct fit for the blank:

* “Informed” as a verb means to share information in an official way. But in the given sentence there is no such official relation. Thus, option B is incorrect.

* “Told” as a verb means to share information to someone either by speaking or by writing. Thus, option C is incorrect.

* “Warned” as a verb means to share information to someone about something dangerous or unpleasant that is going to happen. Thus, option D is incorrect.

* "Insisted" as a verb means demanding something to be followed or to do something. Here in the given sentence, “trek manager” is asked “trekkers” in demanding tone that they should take rest for some time before starting the climbing activity.

Note: Use of “Inform” or “Told” simply shows that information is being shared to the listener. They don’t show the sense of “intended action/expected action from receiver”. This sense of “expected action” is reflected in the usage of verb “Insisted”. Hence, “Insisted” is the best option.

Thus, "Insisted" becomes the correct word to fill in the blank.

Thus, the correct sentence will be:

The trek manager insisted that the trekkers rest for a while before the climb.

Hence, option A is the correct answer.

Easy-going = (used about a person) calm, relaxed and not easily worried or upset by what other people do

Uncaring = not displaying sympathy or concern for others.

Closed = unwilling to accept new ideas

Tense = unable to relax because of nervousness, anxiety, or stimulation.

* The sentence needs a positive adjective for the noun “Rahul”.

* Only “easy-going” is a positive adjective here.

Hence, option A is the correct answer.

Obvious = not conscious of something, especially what is happening around you

Envious = wishing you had what another person has

Oblivious = not aware of or not noticing something, esp. what is happening around you

Studious = very careful or paying attention to all the small details

* Being around one’s pet, makes one forget one’s life problems.

* Thus, the word “oblivious” fits in the blank perfectly.

Hence, option C is the correct answer.