Alone in her home, Janis hears a noise in the middle of the night. Her heart begins pounding. Her emotional response to the situation at this point best represents: physiological arousal. expressive behavior. conscious experience. the interaction of thinking and feeling.

physiological arousal.

Explanation:

Physiological arousal: The term physiological arousal is described as a well-defined feature of 'arousal' that is being reflected by physiological reactions in an individual body, for example, rise in blood pressure, the lessened activity of the 'gastrointestinal system', and escalations in the rate of respiration.

In psychology, physiological arousal is described as a state of being "physiologically alert, attentive, and awake and is controlled by RAS (Reticular Activating System) in the brain.

In the question above, the given statement signifies the 'physiological arousal'.

answer; self_ disclosure;