Going on and off starvation diets will hinder long –term weight loss because this type of dieting
a. hinders nutrient metabolism.
b. slows down the basal metabolic rate.
c. fosters inappropriate exercise habits.
d. increase the amount of essential fat.

Investigator a has biological specimens that are coded and linked to identifiers of the source individuals. investigator a provides the specimens to investigator b but does not provide the individual identifiers. investigator b agrees not to re-identify the source individuals. is investigator b's research using the biospecimens human subjects research according to the definition of human subjects research in the federal regulations?