Choose the explanation that best reflects the spirit of the idom/proverb/phrase given in each question.

To make clean breast of:

The correct answer is To tell the truth about something.

Explanation:
The idiom "to make a clean breast of" means to confess or fully reveal the truth about something, especially something bad, secret, or wrong that one has done, thereby clearing one's conscience.

Origin & Context:
Historically, the "breast" is considered the seat of emotions, secrets, and conscience. To "make a clean breast" of something means to purge or empty out all the guilt or hidden secrets from your breast (mind/heart), resulting in complete truthfulness and honesty.