An Athlete Has Been Working Out for Several Hours and Was

Multiple Choice

An athlete has been working out for several hours and was sweating profusely, but has now stopped even though she continues to exercise. Where is the most likely source of the problem?

A) thermoreceptors are no longer sensing her temperature
B) neurons have suddenly stopped producing the action potentials for communication
C) the brain is no longer regulating temperature
D) sweat glands can no longer produce sweat due to dehydration