One who collects coins as hobby :
A. Philatelist
B. Ornithologist
C. Statistician
D. Numismatist
Answer: Option D
Solution (By Examveda Team)
One word substitute is NumismatistPhilatelist: a person who collects or studies stamps.
Ornithologist: a person who studies or is an expert on birds.
Statistician: an expert in the preparation and analysis of statistics.
Numismatist: someone who studies or collects coins, paper money, or medals.

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