Final answer:
OHRP guidance stipulates that Investigator B is not conducting human subjects research as long as they do not attempt re-identification of the specimens.
Step-by-step explanation:
OHRP guidance states that Investigator B is not conducting human subjects research despite being able to identify the source individuals, as long as they agree not to attempt re-identification of the specimens. However, it is important to note that OHRP does not require such agreements to be subject to IRB oversight.