Which of the following is an example of pessimism? If I don’t get every answer right on today’s test, it’s the teacher’s fault.

If there’s a chance it will rain, it’s going to rain.

If I don’t get every answer right on today’s test, I’m a failure.

If there’s a chance it will rain, there’s also a good chance it won’t rain.

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?