Question

autonomic reflexes
which is an example of a negative feedback loop related to the autonomic nervous system?
your body cools off after being exposed to high temperatures.
your muscles feel tired after a strenuous exercise regime.
your leg jerks forward when your doctor taps your kneecap.
your blood pressure rises after eating a large bowl of salty popcorn

Explanation:

Negative feedback loops aim to maintain homeostasis. When the body is exposed to high temperatures, it activates mechanisms (like sweating) to cool down, which is a negative feedback loop. Muscle tiredness after exercise is due to physiological exertion and not a feedback loop. The knee - jerk reflex is a simple somatic reflex. Blood pressure rising after salty food is a response but not a negative feedback loop (negative feedback would act to lower it back if it were a loop in this context, but the description here is just a rise).

Answer:

Your body cools off after being exposed to high temperatures.