What is interrogative mark?

The interrogative mark, also known as the question mark (?), is a punctuation mark used at the end of a sentence that asks a question. It's the visual cue that indicates the sentence is asking for information or seeking confirmation.

Here are some examples:

* What is your name?

* Are you going to the party?

* Can you help me with this?

Without the question mark, these sentences would be statements instead of questions.