Vulnerable persons are those who are less able to protect themselves than other persons in a given situation. The Common Rule (45 CFR 46, Subpart A) has specific requirements for the following vulnerable populations, except:.
A. Individuals with Impaired Decision-Making Capacity
B. Children
C. Prisoners
D. Workers

Workers

Explanation:

Established in 1991, the "Common Rule" (created to protect human subjects in medical and behavioral researches) consists of 4 sub-parts. Part A deals with informed consent, B protects pregnant women, human foetus and newborn children, C protects prisoners and D protects children.

answer; the region experienced a surplus of food;