What type of stress describes the body's chemical reactions to the demands placed on it?

• A. Physiological
• B. Psychological
• C. Environmental
• D. Social

Answer: (A)

When stress is described as the body's chemical reactions to demands, the situation is describing physiological stress. This refers to the automatic biological processes that occur in the body in response to a challenge, threat, or workload. The body releases stress hormones like adrenaline and cortisol, activates the sympathetic nervous system, and brings about changes such as increased heart rate, faster breathing, and more glucose being released for quick energy. These chemical and physiological changes are the body's way of preparing to meet the demand, often called the fight-or-flight response.

This is distinct from psychological stress, which centers on feelings, thoughts, and perceptions about the demand; environmental stress, which involves external conditions like heat or noise; and social stress, which arises from interactions with others.