The major factor contributing to the increased emphasis on the need for proficiency in cultural nursing practice in australia is which of the following? select one:
a. a decreasing rate of immigration.
b. limited access to health care services.
c. demographic changes.
d. the nursing shortage.

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?