Anurse is counseling a woman who is in the office for her second prenatal visit. the client says that since her last visit, she has been able to cut her smoking from a pack a day to only two or three cigarettes a day. which of the following would be the most appropriate response for the nurse to give her?

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?