Which of the following sentences has correct subject-verb agreement?

Each of my sisters have their rooms.
Each of my sisters have their rooms.

Marco’s car needs a new transmission and a new clutch.
Marco’s car needs a new transmission and a new clutch.

My cat don’t fit through the kitty door because its stomach is so fat.
My cat don’t fit through the kitty door because its stomach is so fat.

Drinking water help you lose weight.
Drinking water help you lose weight.

A verb is one of the parts of speech in English language. Verbs can be defined as any word that describes an action, occurrence, or state of existence. Some examples of verb are dance, sing, walk, play, run, sit, etc.

In English language, a subject can be defined as the person, thing, idea or place that performs an action.

A subject-verb agreement refers to the situation in which there is an agreement between a subject and a verb in terms of number.

This ultimately implies that, if a subject is singular, its verb should also be singular and if the subject is plural, the verb must be plural.

Hence, the sentence that has a correct subject-verb agreement is; Marco’s car needs a new transmission and a new clutch. The subject in the sentence above is singular and has a singular verb.