Step 1: Understand the relationship in the first pair.
A Numismatist is a person who collects or studies coins. Thus, the relationship is between a person and the object they collect.
Step 2: Apply the same relationship to the second pair.
An Arctophilist is a person who collects teddy bears. The word comes from the Greek word “arcto,” meaning bear.
Step 3: Analyze the options.
(A) postcards: These are collected by deltiologists, not arctophilists.
(B) postal stamps: These are collected by philatelists.
(C) teddy bears: Correct — arctophilists are collectors of teddy bears.
(D) books: These are collected by bibliophiles.
Step 4: Conclusion.
Since an arctophilist is a person who collects teddy bears, the correct analogy is completed with teddy bears.