Instructions should generally be phrased in which voice and mood?

The correct choice is phrased in the active voice and imperative mood because this approach clearly directs the reader to perform specific actions, making instructions straightforward and easy to follow.

Using the active voice emphasizes the subject performing the action, which enhances clarity and comprehension. For example, saying "Turn on the machine" immediately tells the reader what to do.

Additionally, the imperative mood is specifically designed for commands or requests, which aligns perfectly with the purpose of instructions. It directly addresses the audience and conveys urgency or importance, thereby increasing the likelihood that the reader will act on the instructions provided.

In contrast, passive voice and indicative mood, or active voice combined with the subjunctive mood, do not convey the same level of clarity or directness necessary for effective instructional writing. Passive voice can obscure who is responsible for the action, while indicative mood statements typically report facts rather than instruct actions, and the subjunctive mood often expresses wishes or hypotheticals rather than direct commands.