Answer: A. He depended on faith alone and rejected logic.
Explanation: Which best explains why William of Ockham changed the nature of philosophy in the Middle Ages is that he depended on faith alone and rejected logic. Also he stated that " Only faith gives us access to theological truths. The ways of God are not open to reason, for God has freely chosen to create a world and establish a way of salvation within it apart from any necessary laws that human logic or rationality can uncover" which is why this answer choice is correct.