Which symptom indicates that a person is in shock?

A person in shock often displays characteristics that reflect inadequate blood flow and oxygen to the body's organs and tissues. The correct choice, which describes pale, moist, and clammy skin, is indicative of shock because this condition causes the body to divert blood away from the skin and extremities in an effort to maintain vital organ function. As a response, the skin becomes pale and may feel cool and clammy due to this reduced blood circulation and increased sweating.

In shock, other physiological responses can occur, such as an increased heart rate as the body attempts to compensate for the decreased blood volume or pressure. However, the key symptom of pale and clammy skin provides an immediate visual indication of shock. This symptom helps identify an urgent medical condition prompting rapid intervention.

The other choices may suggest different health issues or normal responses; for example, flushed skin or warm skin might imply a different physiological state, not typically associated with shock. Thus, pale, moist, and clammy skin serves as the most accurate sign of a person in shock.