Please help Which one of the following sentences contains a collective noun?

AThe quality of mercy is not strained.
BListen, my children, and you shall hear.
CWho among you is a butcher, a baker, or a candlestick maker?
DThe legislature met in secret session

Verified Answer :

A collective noun refers to a group taken as a whole, and the most famous example is perhaps "the police".
In the sentences above the only collective noun is d. "The legislature".

The following sentence contains a collective noun: The legislature met in secret session.