Step 1: Understanding the Concept:
An antonym is a word that has the opposite meaning to another word. The question asks for the antonym of 'Duplicate'.
Step 2: Detailed Explanation:
A 'Duplicate' is an exact copy of something.
Let's analyze the options:
- (A) Copy: A copy is a thing made to be similar or identical to another. This is a synonym of 'Duplicate'.
- (B) Original: An original is the first and authentic version of something, from which a copy or translation is made. This is the direct opposite of a 'Duplicate'.
- (C) Clone: A clone is an exact copy, especially a biological one. This is a synonym of 'Duplicate'.
- (D) Photo: A short form of photograph, which is a picture made using a camera. While a photo can be a copy, the word itself is not a direct synonym or antonym.
Step 3: Final Answer:
The word that means the opposite of 'Duplicate' is 'Original'. Therefore, option (B) is the correct answer.