Question

¿Qué haces, Carlos?

A. Está comiendo.

B. Estoy comiendo.

C. Están comiendo.

D. Estás comiendo.

Answer 1

i know it isnt b.

Answer 2

if Carlos is to answer the first person he would say Estoy comiendo so it is b

Answer 3

You said you were going to ask your teacher about this. Did you do that?

Answer 4

she still has not gotten back with me....

Answer 5

it was A.

Answer 6

That makes absolutely no sense to me.

If the question were "¿Qué HACE Carlos?"
THEN it would make sense.