Concept:Stigma against PLWHA is shown through discrimination and unfair denial of their normal rights and social benefits.Explanation:PLWHA are often treated unfairly because of fear and wrong beliefs about HIV/AIDS.This treatment usually appears as denying them the privileges that other people enjoy.These privileges may include equal access to jobs, services, or community opportunities.So, stigmatizing PLWHA means refusing them such privileges.Answer:A. refusal of privileges