Answer:
prisoners 
Explanation:
Prisoners have been popular victims(research subjects) of illegal research in the past and so laws have been put in place to prevent this. 
Prisoners are classified as "vulnerable" under federal regulations that regulate research with prisoners. This is because their informed consent and voluntary decision to participate in any research brought before them is somewhat compromised. The health and human services(HHS) in addition to other regulations have added additional requirements for research on prisoners such as the requirement of a prisoner or prisoner representative in the IRB. 
 
        
             
        
        
        
Answer:
D.	vaporization and evaporation
Explanation:
 
        
             
        
        
        
The appropriate response is Positive psychology. It is the logical investigation of the qualities that empower people and groups to flourish. The field is established on the conviction that individuals need to lead significant and satisfying lives, to develop what is best inside themselves, and to upgrade their encounters of adoration, play, and work.
        
             
        
        
        
B. Geography is responsible for differences in prosperity.
Please correct me if I'm wrong!! :)