Select the most appropriate meaning of the given idiom.
Through thick and thin

Correct option is C

The idiom “through thick and thin” means being supportive and staying loyal in all situations, whether good or bad.

Sentence use:
Riya stood by her best friend through thick and thin, never giving up on her even during tough times.

Similar idioms:

Stick by someone – To support someone consistently.
Ride or die – A loyal companion who stays no matter what.
Stand by someone – To remain loyal or supportive to someone.