If
Unless
When
No sooner did
Answer is Right!
Answer is Wrong!
The correct answer is: A. If
The word “if” is used to introduce a condition or possibility. In this case, the condition is that the man complains. The consequence of this condition is that the police will take action.
The other options are not as appropriate in this context.
- “Unless” is used to introduce a condition that must be met in order for something to happen. In this case, it would be saying that the police will only take action if the man does not complain. This is not the intended meaning of the sentence.
- “When” is used to introduce a time when something will happen. In this case, it would be saying that the police will take action when the man complains. This is not the intended meaning of the sentence.
- “No sooner did” is used to introduce two events that happen very close together in time. In this case, it would be saying that the man complained and then the police took action. This is not the intended meaning of the sentence.