Which of the following is an example of a physical need?

Food is classified as a physical need because it is essential for survival and is a basic requirement for sustaining life and maintaining health. This fundamental need addresses the physiological aspects of a person's well-being, as access to adequate nutrition directly influences a person's physical state, energy levels, and overall health.

In contrast, emotional support, social interaction, and spiritual fulfillment, while important for an individual's overall well-being, are considered psychological or social needs rather than physical needs. These other needs focus on emotional health and personal connections, which do not directly contribute to the biological functioning of the body in the same way that food does. Thus, food is the clear choice when identifying a physical need.