Read the following sentence and find out the object nouns in them.
I met them at a party.

The correct answer is: Them

A subject noun is a noun that is the subject of the sentence. A subject is a noun that performs the action in that sentence. In contrast, an object noun is a noun that is the object of the sentence i.e., the object noun is the receiver of the action in a sentence. 'I met them at a party', here the object noun is 'party'.