The correct answer is option 2 i.e. or laughing at.

The error lies in option 2 because of the wrong use of "Verb form".

We need to replace "Laughing" with "Laugh" to make the statement grammatically correct.

Grammatical concept:- 

All the verbs are in the "First form" hence, we need to keep the coming verb joined with "or/and" in the same form.

The chosen option contains the Grammatical Error hence, it will be the correct choice.

Correct Sentence:-

The state is tightening its control over what we read, watch, hear or laugh at.

The correct answer is option 1 i.e. 80 percent of their oil.

The error lies in option 1 because of the wrong use of "Pronoun".

We need to replace "Their" with "Its" to make the statement grammatically correct.

Grammatical concept:- 

A pronoun is used according to the number and gender of the subject.

In the given statement the subject is "India" hence, "Its" will be the correct possessive determiner here.

The chosen option contains the Grammatical Error hence, it will be the correct choice.

Correct Sentence:-

India which imports almost 80 percent of its oil requirements has seen prices spiralling upwards in recent weeks.

The correct answer is option 1 i.e. The child should be given a nourishing diet.

Given sentence: Give the child a nourishing diet. (Active voice)

Structure of active voice: V1+ Object

Structure of passive voice: Subject + should + be + V3

Sentence in passive voice:  The child should be given a nourishing diet.

The correct answer is option 2 i.e. They surrendered all weapons.

Given sentence: All weapons were surrendered by them. (Passive voice)

Structure of passive voice: Object + was/were + V2 + Subject

Structure of active voice: Subject + V2 + Object

Sentence in active voice:  They surrendered all weapons.

The correct answer is option 3 i.e. Reema told her Mother that Bikram was a good player.

The given sentence is an assertive sentence in the Present indefinite tense. It will be converted to past indefinite tense.

Changes:

• 'said to' changes to 'told'
• The conjunction ‘that’ is used to connect reporting and reported speech.
• 'is' changes to 'was'.

On making these necessary changes, the sentence can be changed to its respective indirect speech.

The correct answer is option 4 i.e. The technician asked me why we had tried to repair the computer.

This is a double interrogative sentence. 

Changes required:

• 'said to me' changes to 'asked me'.
• "try to repair" changes to "had tried to repair".
• 'you' changes to 'we'.

On making these changes, the given sentence can be converted to its respective indirect speech.

The correct answer is option 2 i.e. implementation.

Their vision was very clear: if Indians were to play a meaningful role in the community of nations, they must be second to none in the application of advanced technologies to their real-life problems.

1. mistreatment - ill-treatment
2. implementation - putting a plan into use/execution
3. corruption - dishonest conduct
4. misuse - used for the wrong purpose

Since the sentence talks about India playing a meaningful role, the word 'implementation' fits well for the use of advanced technologies.

Hence, implementation is the correct answer.

The correct answer is option 3 i.e. Improbable.

• "Presumable" means likely or assumed to be true based on available evidence or circumstances.
• "Improbable" means unlikely or not likely to happen. It is the opposite of something that is presumed or considered likely.

The correct answer is option 1 i.e. Thanklessness.

• Gratitude is the quality of being thankful or showing appreciation for kindness received.
• Thanklessness, on the other hand, refers to the absence or lack of gratitude, meaning a lack of appreciation for kindness.

The correct answer is option 4 i.e. A black sheep.

• A black sheep means a member of a family or group who is regarded as a disgrace to it.
• Meaning of the other idioms:
  • A fish out of water: a person in a completely unsuitable environment or situation.
  • A white elephant: a possession that is useless or troublesome, especially one that is expensive to maintain or difficult to dispose of.
  • A lone wolf: a very independent or solitary person.