The best answer for the question "An imperative sentence" is:
B. states a command.
Imperative sentences are used to give commands, make requests, or offer advice. They typically start with a verb in its base form (without a subject) and are direct in nature. For example:
- "Please close the door."
- "Eat your vegetables."
- "Go to bed."
Imperative sentences express a sense of authority or urgency, instructing the listener to take a specific action. This distinguishes them from other types of sentences like declarative (statements), interrogative (questions), or exclamatory (expressing strong emotion).