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 more frequent in the earlier stages of hiv.
c. ois are the common cause of death of people with hiv/aids.
d. ois can be deadly to perfectly healthy people.

Opportunistic infection (OI) can best be described as:

(C) OIs are the common cause of death of people with HIV/AIDS

Opportunistic infections are those which occur more frequently and are more severe in people with weakened immune systems such as those suffering from HIV and AIDS. They are called opportunistic because they take advantage of the weakened immune system of the individual.

they bound logs together and built a raft. enkidu steered it down the great river. gilgamesh carried humbaba's head.