Which of the following describes the meaning of "torpid"?

The term "torpid" specifically refers to a state of inactivity or sluggishness, often associated with a lack of energy or vitality. It describes a condition where someone or something is lethargic or slow-moving, indicating a sense of dullness or apathy. This aligns perfectly with the definition provided in the correct choice, as it captures the essence of being without energy.

In contrast to the correct answer, the other choices suggest characteristics that are the opposite of "torpid." Describing someone as "full of energy," "energetic," or "excited" illustrates a vibrant or active state, which does not relate to the concept of sluggishness at all. Therefore, the selected definition emphasizes the inherent qualities of being torpid, making it the most accurate description available.