an increase in heart rate an increase in body temperature an increase in oxygen demand an increase in breathing rate
I gave my students this multiple choice question: A student practicing for the outdoor track team begins to sweat. To what stimulus is the body responding?

Only one answer is correct among these 4 choices:
- an increase in heart rate
- an increase in body temperature
- an increase in oxygen demand
- an increase in breathing rate

Could you tell me which one is correct?

an increase in body temperature