Select the most appropriate meaning of the given idiom.
Keep a straight face

Correct option is C

Option (c) is the correct meaning of the given idiom.
Idiom: “Keep a straight face” – To control your expression and not show amusement even when something is funny (हँसी रोककर गंभीर चेहरा बनाए रखना).
Example: I couldn’t keep a straight face when he started dancing in that costume.
Other related idioms and their meanings:
· Burst out laughing – To suddenly laugh loudly.
· Laugh one’s head off – To laugh uncontrollably.
· Keep one’s cool – To remain calm and composed.