The autonomic nervous system manages our ________.

A. Heart rate

B. Blood pressure

C. Body temperature

D. All of the above

D.

http://www.becomehealthynow.com/article/bodynervousadvanced/822

It's D (I've taken this test.)

The autonomic nervous system is responsible for regulating and controlling many of our internal functions that occur automatically, without our conscious effort. This system manages our heart rate, blood pressure, body temperature, and many other processes. So, the correct answer is D. All of the above.