The meanings of the words are:

• Oblivious: lacking remembrance, memory, or mindful attention.

For example, the cat had crept in silently, and we were oblivious to its presence in the room.

• Sensitive: quick to detect or respond to slight changes, signals, or influences.

• Obvious: easily perceived or understood; clear, self-evident, or apparent.

• Ignorant: lacking knowledge or awareness in general; uneducated or unsophisticated.

For example, I was largely ignorant of the effects of radiotherapy.

• Attentive: paying close attention to something.

Hence, option C is the correct answer.

The meanings of the words are:

• Ignoble: not honourable in character or purpose.

For example, the noble man is not only more rational than the ignoble but stronger in desire.

• Corrupt: having or showing a willingness to act dishonestly in return for money or personal gain.

• Craven: contemptibly lacking in courage; cowardly.

• Abject: (of something bad) experienced or present to the maximum degree.

• Dignified: having or showing a composed or serious manner that is worthy of respect.

For example, she maintained a dignified silence.

Hence, option D is the correct answer.

The meanings of the words are:

• Flabbergasted: greatly surprised or astonished.

For example, this news has left me totally flabbergasted.

• Disturbed: having had the normal pattern or functioning disrupted.

• Motivated: provide (someone) with a reason for doing something.

• Astonished: greatly surprised or impressed; amazed.

For example, he was astonished at the change in him.

• Terrified: cause to feel extreme fear.

Hence, option C is the correct answer.

The meanings of the words are:

Speculate: form a theory or conjecture about a subject without firm evidence.

Consider: think carefully about (something), typically before making a decision.

Contemplate: look thoughtfully for a long time at.

Deliberate: done consciously and intentionally.

Dismiss: order or allow to leave; send away.

Hence, option D is the correct answer.

Let’s first see the meanings of the given words:

Instigate = to make something start to happen

Kindle = to start a fire or to make something start to burn

Instill = to make somebody think or feel something

Imbibe = to absorb something, especially information

Stagnate = to stop developing, changing or being active

Hence, option B is the correct answer.

Let’s first see the meanings of the words:

Placate = to make somebody feel less angry about something

Appease = to bring to a state of peace, quiet, ease, calm, or contentment; pacify; soothe

Propitiate = to make peace with somebody who is angry by trying to please them

Enrage = to make somebody very angry

Conciliate = to try to make a group of people less angry, especially in order to end a dispute

Hence, option D is the correct answer.

Trust = the belief that somebody is good, honest, sincere, etc. and will not try to harm or trick you

Ability = the mental or physical power or skill that makes it possible to do something

Welfare = the general health, happiness of a person, an animal or a group

Safety = the state of being safe; not being dangerous or in danger

Belief = something you accept as true; what you believe

Hence, option D is the correct answer.

Extensive = large in area or amount

Intricate = having many small parts or details put together in a complicated way

Lengthy = very long

Intensive = involving a lot of effort or activity in a short period of time

Elaborate = containing a lot of careful detail or many detailed parts

Hence, option D is the correct answer.

Alluring = attractive and exciting in a way that is not easy to understand or explain

Cheating = to trick somebody, especially when that person trusts you; to deceive somebody

Distracting = to take somebody’s attention away from something

Attractive = that pleases or interests you; that you like

Deceitful = dishonest; trying to make somebody believe something that is not true

Hence, option C is the correct answer.

Abbreviate = to make something shorter, especially a word or phrase

Challenge = something new and difficult that forces you to make a lot of effort

Expand = to become or to make something bigger

Oppose = to disagree with somebody’s beliefs, actions or plans and to try to change or stop them

Dispute = a disagreement or argument between two people, groups or countries

Hence, option B is the correct answer.