Which of the following might be a sign of a fad diet? A.
Diets that eliminate food groups
B.
Diets that severely restrict caloric intake
C.
Diets that require a weight loss aid or pill
D.
All of the above

i would suggest the best recommendation want to get out of the vehicle and look around to make sure their isn't anyone near or behind the vehicle.

explanation:

answer(b) keep oxygenated and deoxygenated blood separate;