The mastery hypothesis: the mere fact that they are exercising makes patients feel like they have achieved something, cheering them up much as learning a new hobby or achieving a certain goal might cheer them up.
That sounds like B to me.
That is correct- the heart pumps and the smooth muscles of arteries contract (also called constriction)
Contamination usually occurs when draping an extremity.
Folate is the correct answer. Folates help the tissues and cells grow and function correctly and also have been shown to make a 4.3% to 12% decrease in getting the risk of cancer.
