Option 1: Amateur -> Similar to novice; refers to someone who lacks professional skill or experience.
Option 2: Expert -> Someone highly skilled and knowledgeable; the direct opposite of a beginner.
Option 3: Artist -> A person who creates art; unrelated to the level of experience.
Option 4: Priest -> A religious leader; unrelated to skill level or experience.
Hence, Option 2: Expert -> A novice is a beginner with little experience, while an expert is someone with extensive knowledge and skill in a field, making them antonyms -> correct