What health consequence is most likely to result from a diet high in saturated fats and refined sugars?
a. drug addiction
b. improved sleep
c. heart disease
d. weight loss

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?