Which of the following describes someone who is questioning? check all that apply.
uncertain about biological sex
exploring gender identity
uncertain about sexual orientation
engaging in new romantic relationships with opposite sex
has gender identity and biological sex that do not align

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?