Which of the following is an example of passive cooling?

Placing something cool on the body is considered an example of passive cooling because it involves utilizing external coolness to lower the body’s temperature without any active measures taken by the body itself. This technique allows for heat to be transferred away from the body to the cooler object, helping to reduce overall body temperature effectively.

In contrast, removing clothing, while it may seem beneficial, is more about allowing the body to dissipate heat through evaporation and airflow rather than being a direct application of coolness. Using ice water is an active form of cooling, as it involves applying a substance that conducts heat away from the body rapidly. Similarly, running in a shaded area provides relief through reduced exposure to heat and sunlight but requires physical activity, making it an active cooling behavior rather than a passive one.