Which explains verb mood?

A. It is how a verb is used to make a command.
B. It is how a verb is used to ask a question.
C. It is how a verb is used to state a fact.
D. It is how a verb is used to express a thought.

D. It is how a verb is used to express a thought.

The correct answer is D. It is how a verb is used to express a thought. Verb mood refers to the attitude or intention conveyed by a verb in a sentence. The different verb moods include indicative mood (used to state facts or opinions), imperative mood (used to give commands or make requests), subjunctive mood (used to express hypothetical or contrary-to-fact situations), conditional mood (used to express conditions or possibilities), and infinitive mood (used to express purpose or obligation). In this case, expressing a thought falls under the indicative mood.