The key factor that allows people to express their anti-minority feelings and beliefs is

A) the number of computers available.
B) anonymity.
C) freedom.
D) prejudice.

Anonymity allows people to express their anti-minority feelings and beliefs without fear of retribution or backlash. This can be done online or in situations where the person feels their identity is hidden or protected. Prejudice is a driving force behind anti-minority feelings and beliefs, but it is not the key factor in allowing people to express them. Freedom is a broad concept and can be interpreted in different ways, but it is not specifically tied to expressing anti-minority beliefs. The number of computers available may impact the accessibility or reach of such expressions, but it is not the underlying factor allowing people to express them.