What does "torpid" mean?

The term "torpid" refers to a state of being sluggish, inactive, or lacking in energy. It describes a condition where an individual or creature may move slowly or show little mental or physical activity. The word often conveys a sense of lethargy or a decrease in responsiveness, making it apt for describing someone who is feeling sluggish or without vitality. Therefore, the choice that aligns precisely with this meaning is the correct one.

The other options describe qualities that are opposite to "torpid." For example, being full of energy or quick-moving indicates vitality and liveliness, which directly contrasts with the notion of being sluggish. Similarly, being eager and enthusiastic suggests a readiness to engage or act, further diverging from the concept of inactivity or lethargy that "torpid" embodies.