The answer is b. the state's population
Hope this helped
        
             
        
        
        
I think the answer to this is A
        
                    
             
        
        
        
Answer:
A. Pregnant women, prisoners, children
Explanation:
The groups that are protected in the federal regulations (45 CFR 46), specifically in Subparts B, C, and D with additional protections are <em>pregnant women, prisoners, children. </em>In Federal Regulations, Protection of Human Subjects involved in research. Pregnant women and fetuses, prisoners and children.