WHY DOES A PERSON FEEL SICK WHEN THEY HAVE HIV? A) THEY COUGH A LOT
B) WHEN MOST OR ALL THE WHITE BLOOD CELLS ARE DESTROYED, OTHER
DISEASES ATTACK THE BODY EASILY
C) THE GET A FEVER

C They Get A Fever

Explanation:

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

since he could see color, and nobody else could, he didn't find it fair that everyone else in the utopia couldn't see color but him and the giver : d