Answer:
The Common Rule (45 CFR 46, Subpart A) has specific requirements for the following vulnerable populations, except:
D. workers
Step-by-step explanation:
The common rule for protection of human subjects do not consider workers as a vulnerable population. I believe this is because to some extent workers are able to take care and protect themselves.
other groups that is listed as vulnerable include military veterans, homeless and incarcerated population, individuals with low level of education.