Which sentence type is used to ask a question?

The sentence type that is used to ask a question is the interrogative sentence. Interrogative sentences are specifically designed to elicit information and are typically structured in a way that indicates a query is being made. They often begin with question words such as who, what, where, when, why, or how, but can also be formed by inverting the subject and auxiliary verb, as in "Are you coming?"

Understanding sentence types is crucial because each serves a different purpose in communication. For instance, imperative sentences give commands, exclamatory sentences express strong emotion, and declarative sentences state facts or opinions. An interrogative sentence's unique function of requesting information is what distinguishes it from the other types, making it the correct choice for asking a question.