Of the four common methods used to estimate percent body fat, more convenient and relatively accurate.
a. bioelectrical impedance analysis,
b. underwater weighing,
c. bod pod,
d. a skinfold caliper

The percent body fat is the proportion of total body mass that is fat. Of the four common methods used to estimate percent body fat, using a skinfold caliper is more convenient and relatively accurate. In the a skinfold caliper test, a portion of the skin is pinched to determine the amount of fat that can be pinched off from the muscle. Correct D

answer(b) keep oxygenated and deoxygenated blood separate;