What is a person who holds a belief that is not accepted by other members of his or her faith?

heretic
patriarch
apostle
martyr
is it B?

No.

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are you a teacher?

Yes.

No, the answer is not B. The correct term for a person who holds a belief that is not accepted by other members of his or her faith is "heretic." A heretic is someone who holds a belief or opinion that goes against the established teachings or doctrine of their religious tradition.