Which statement by a registered nurse (RN) represents appropriate delegation to a nursing assistant? "
a) Inspect the site for thrombophlebitis.
b) Discontinue the IV solution.
c) Check the infusion rate.
d) Dispose of the disconnected IV set.

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?