The verb mood refers to the form a verb takes to express the attitude of the speaker toward the action. Here are the explanations you're looking for:
- Indicative mood: It is how a verb is used to state a fact.
- Imperative mood: It is how a verb is used to make a command.
- Subjunctive mood: It is how a verb is used to express a thought, desire, or hypothetical situation.
- Interrogative mood: It is how a verb is used to ask a question.
If you need to select one from your list, the indicative mood is about stating a fact, the imperative mood is about commands, the subjunctive is about expressing thoughts or hypotheticals, and the interrogative is about asking questions. Each mood serves a different function in language.