In the following question, out of the given four alternatives, select the alternative which best expresses the meaning of the Idiom/Phrase.

The whys and wherefores

Reasons

The idiom "the whys and wherefores" means the reasons or explanations for something. It is a way of asking for more information about something, or for someone to explain their reasoning.

The other options are not correct.

• References: These are people who can provide information about someone's character or qualifications.
• Circumstances: These are the conditions or events that surround something.
• Requirements: These are the things that are needed or necessary for something.

Therefore, the best alternative is Reasons.