Which of the following statements BEST describes an opportunistic infection (OI)?

A. OIs are common only to people with healthy immune systems.

B. OIs are the common cause of death of people with HIV/AIDS.

C. OIs are more frequent in the earlier stages of HIV.

D. OIs can be deadly to perfectly healthy people.

Answer:- B. OIs are the common cause of death of people with HIV/AIDS.

Opportunistic infections (OIs) refers to the infections that happen more frequently or are more severe in persons with debilitated immune systems than in people with fit immune systems. People with debilitated immune systems comprise people living with HIV. Opportunistic infections (OIs) refers to the infections that happen more commonly and are more severe in people with debilitated immune systems, including people with HIV. Many OIs are well-thought-out to be AIDS-defining conditions.