Why did Parliament prefer William and Mary to Charles 2?

Answer: William and Mary respected Parliament.

Explanation:

Unlike Charles II, William and Mary (like all future rulers) did not try to pass a single law without going through parliamentary procedure. Also, Charles II rejected the rules and did not convene a session of Parliament for three years.

All this was the result of Parliament's distrust of Charles II. This is why the trust was shown to William and Mary.