Which is a true statement about nominative case?

You're asking about the nominative case! Here's what's true about it:

The nominative case is used for the subject of a sentence.

Here's why:

* Subject: The subject is the person or thing performing the action in a sentence.

* Nominative Case: Nouns and pronouns in the nominative case are the ones that typically occupy the subject position.

Example:

* The cat chased the mouse. ("Cat" is the subject and is in the nominative case.)

Important Note: English doesn't have a lot of distinct cases like some other languages (like Latin or German). While we still use the nominative case for subjects, English grammar focuses more on word order than case endings.