Which is the meaning of orthodox?

• A. conventional or acceptable by the general public
• B. traditional or old-fashioned in one's beliefs
• C. a strict observer of a certain faith
• D. standard or acceptable practice

Answer: (C)

Orthodox refers to beliefs or practices that are traditional or accepted by an established faith or group. When used as a noun, an orthodox is someone who adheres strictly to those beliefs and observes the related practices. That makes the option describing “a strict observer of a certain faith” the best fit, because it captures both the adherence to traditional doctrine and the sense of acting as a devoted follower of that faith. The other ideas describe conformity or standard practice in a more general sense, without signaling strict adherence to a specific faith or doctrine.