Select the most appropriate meaning of the given idiom.
Loose cannon

Correct option is B

Option (b) is the correct meaning of the given idiom.
Loose Cannon: A person who is unpredictable and can cause problems due to impulsive behavior. This phrase originates from the image of an unsecured cannon on a ship that could roll around and cause chaos. (अप्रत्याशित और समस्या उत्पन्न करने वाला व्यक्ति)
Example: John is a loose cannon; he often makes rash decisions that put the whole project at risk.
Other related idioms and their meanings:
· A ticking time bomb – Someone who may cause trouble at any moment.
· A bull in a china shop – A person who acts recklessly and causes destruction.