What does "quiescent" mean?

The term "quiescent" is best defined as being in a state of rest or inactivity, which aligns perfectly with the choice that describes it as quiet and inactive. In a broader context, "quiescent" often refers to situations, organisms, or processes that are dormant or not currently active, echoing the idea of a peaceful stillness. This quality can be observed in various biological, geological, or even metaphorical scenarios.

While some other selections suggest states of high energy or activity, "quiescent" distinctly denotes a lack of movement or activity, making the concept of quietness integral to its meaning. This nuanced understanding helps reinforce why the chosen answer is accurate in capturing the essence of the word.