Question 5 Which of the following best exemplifies a reflex? A man salivates while watching a chef fry sausages. A woman puts her coat on before stepping out into the cold. A child runs out to watch a fire engine drive by water after eating spicy food.

**Step 1:** A reflex is an involuntary, automatic response to a stimulus. It does not require conscious thought. **Step 2:** Consider each option: - **Option A:** A man salivates while watching a chef fry sausages. This describes an automatic physiological reaction (salivation) in response to the stimulus (the sight and smell of food). This is similar to the classical conditioning experiments by Pavlov, where the stimulus led to a reflexive response. - **Option B:** A woman puts her coat on before stepping out into the cold. This action involves a conscious decision and preparation; it is not an involuntary reflex. - **Option C:** A child runs out to watch a fire engine drive by water after eating spicy food. This is a voluntary action likely driven by curiosity or a desire to alleviate discomfort; it is not an automatic, reflexive response. **Step 3:** The best example of a reflex is in **Option A**, where the man salivates automatically in response to food cues. **Final Answer:** \( \textbf{A man salivates while watching a chef fry sausages.} \)