According to the "least of the evils" position,

A) evil appears to exist but does not actually exist.
B) there is no more evil in the world than is necessary, except, perhaps, for moral evil.
C) evil is a mystery that cannot be comprehended.
D) all evil comes into the world through free will .

The "least of the evils" position acknowledges the reality of evil in the world but suggests that there is no more evil in the world than is necessary, except, perhaps, for moral evil. This position allows for the existence of evil, but tries to find a way to understand it in terms of necessity, rather than dismissing it completely or attributing it to a malevolent force. Option A is incorrect because the "least of the evils" position acknowledges the existence of evil. Option C is incorrect because the position does not suggest that evil is a mystery that cannot be comprehended. Option D is partially correct, but only in the case of moral evil - the "least of the evils" position does not necessarily attribute all evil to free will.