Choose the correct meaning of idiom:
Throw cold water on

Correct option is B

Option (b) is the correct meaning of the given idiom.
Throw cold water on: This idiom means to discourage, criticize, or stop someone’s excitement/plan by reacting negatively—as if cooling down their enthusiasm. (Hindi idiom: उत्साह पर पानी फेर देना)
Example: Everyone was excited about the trip, but he threw cold water on the plan by listing all the problems.
Other related idioms and their meanings:
· Rain on someone’s parade: spoil someone’s happiness or celebration.
· Pour cold water over: discourage an idea or enthusiasm (same sense).
· Dampen someone’s spirits: reduce excitement or confidence.
· Burst someone’s bubble: destroy someone’s hopes or illusions.