Which word best describes a person who is avoiding activity or exertion?

The term "indolent" specifically captures the essence of someone who avoids activity or exertion. This word is rooted in a Latin term that relates to laziness or a desire to avoid effort, making it particularly fitting for describing a person who is inactive or lethargic.

In contrast, the other choices describe characteristics that are antonymous to the concept of avoiding activity. "Energetic" conveys a sense of liveliness and vigor, suggesting a tendency towards action rather than avoidance. "Vigorously active" similarly emphasizes a strong inclination towards physical movement and engagement in activities. "Brave" relates to courage and the ability to confront fear or challenge, which does not have any direct connection to avoiding effort. Thus, "indolent" stands out as the word that most accurately describes someone who is deliberately refraining from activity or exertion.