Nancy is in her building elevator going down to the lobby when the elevator stops suddenly between floors, and the doors don’t open. nancy’s heart starts pounding, and her palms start sweating. in this scenario, nancy’s physiological responses can be best attributed to her nervous system.

Sympathetic.

Explanation:

The autonomic nervous system is divided into the sympathetic and parasympathetic nervous system. The sympathetic nervous system is involved in the fight and flight response.

The Nancy's building elevator stops between floors. This is a case of fight and flight response and her sympathetic nervous system becomes active. This causes increase in the heart pounding and sweating of palms.

Thus, the answer is sympathetic.

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