Bernard McGrane Suggests That We Should Practice Using a Beginner's

Bernard McGrane suggests that we should practice using a beginner's mind, the opposite of an expert's mind. Usually it's good to be an expert. Why should we try to think like beginners instead?

A) An expert's mind is so full of facts and assumptions that it has difficulty learning anything new.
B) To better understand the world, we need to defamiliarize ourselves with it.
C) We need to unlearn what we already know in order to become better sociologists.
D) A beginner's mind allows us to approach the world without knowing in advance what we will find.
E) The approach of a beginner's mind is more readily accepted by whoever is being studied.