. . . . . . . . sir asks a question, even we won’t answer. A. When B. Unless C. If D. Hardly

The correct answer is Unless.

• When is used to refer to a specific time or occasion.
• Unless is used to introduce a condition or exception.
• If is used to introduce a condition or possibility.
• Hardly is used to express doubt or surprise.

In the sentence “Even we won’t answer unless sir asks a question”, the speaker is saying that they will not answer unless the question is asked by the person in charge. This means that the speaker is willing to answer questions, but only if they are asked by the right person.

The other options are not as relevant to the sentence. When is not appropriate because the speaker is not referring to a specific time or occasion. If is not appropriate because the speaker is not expressing a condition or possibility. Hardly is not appropriate because the speaker is not expressing doubt or surprise.