Which word indicates a movement away from a state of calm?

The choice indicating a movement away from a state of calm is "upset." This word conveys a sense of disturbance or emotional agitation, which directly contrasts with a calm state. When someone is "upset," it implies that there is turmoil or unrest, whether emotionally or situationally, signifying a departure from tranquility.

In contrast, "rest," "quiet," and "peace" all imply states of calmness or tranquility. "Rest" suggests a state of relaxation and recovery, while "quiet" denotes the absence of noise or disturbance, and "peace" reflects a sense of harmony and lack of conflict. None of these options indicate a disturbance; therefore, they do not represent a movement away from calm.