are you illiterate
Maybe you've already realized you're wrong, but continuing to argue so you don't injure your pride. If this is the case, stop. I've done this before and it never ends good for anyone on either side of the argument. It wastes their time, it wastes your time, and you feel like even more of an idiot when you fight for even longer.

"positive discrimination"
"favors members of a underprivileged group"
Could it be any more obvious?
This is EXACTLY what Cool Boi's picture shows. He ticks "Underprivileged Group" and his chances of getting into colleges go up.