Only about ____ of Americans regularly engage in physical exercise

The deer waits motionlessly, hidden in the thicket as the band of hunters approaches. As they get closer, their dogs bark, picking up the scent of their prey. In a futile effort to escape, the deer bolts. Which of the following most accurately describes

the system of the hunted deer at this point? a. Its sympathetic nerve fibers are more active than its parasympathetic nerve fibers. b. Its parasympathetic nerve fibers are more active than its sympathetic nerve fibers. c. Both its sympathetic and parasympathetic nerve fibers are equally active. d. Neither its sympathetic nor its parasympathetic nerve fibers are aroused.

In a sample of low-responsible men, need for power was related to

a. drinking. b. passivity. c. physical health. d. all of these answers are correct