Your friend tells you to 'face the music' when you're hesitant to confess a mistake. What does your friend mean?

Correct option is C

Option (c) is the correct meaning of the given idiom.
Face the music: to confront unpleasant consequences or accept the results of one’s actions. (Hindi: किए की सजा भुगतना)
Example: I know I messed up the report. It's time to face the music in tomorrow’s meeting.
Other related idioms:
· Bite the bullet – to bravely face a painful situation.
· Take the heat – to accept criticism or blame.
· Own up – to confess or admit guilt.