Which form does a verb take when the speaker gives a command without stating the subject?

passive

indicative

subjunctive

imperative

In your own words, explain when a comma is necessary to set apart a subordinate clause and when it is not. Provide a sample sentence to illustrate the rule.

The best answer from the choices given is letter D, Imperative.

Imperative verbs are verbs which create an imperative sentence, i. e. a sentence that gives an order. It will always sound like the speaker is bossing someone around. Imperative verbs don’t leave room for questions or discussion, even if the sentence has a polite tone.

Use the root form of the verb to create the imperative.

Example: Give me that book!