As heat increases, what changes may occur in your body?

The choice that indicates your body temperature and heart rate may rise is accurate because, in response to increased heat, the body initiates physiological changes to help regulate its internal temperature. As the temperature rises, the body often reacts by expanding blood vessels and increasing heart rate to enhance blood flow to the skin, where heat can be dissipated. This increased blood flow helps promote sweating, as sweat evaporation is crucial in cooling the body down.

The other options do not accurately reflect typical physiological responses to heat. For instance, feeling less hungry is generally not a result of heat; in fact, some people may experience an increase in appetite due to higher metabolism. Becoming more energetic is also unlikely since heat can often lead to fatigue and lethargy instead of heightened energy levels. Lastly, skin cooling would contradict the body's natural response to heat exposure, which typically results in warmer skin temperatures due to increased blood flow rather than a cooling effect.