Select the option that can be used as a one-word substitute for the given group of words.
A place where coins and medals are made.

Correct option is B

The correct one-word for the given group of words is (b) Mint.
A mint is a place where coins and medals are produced, typically by a national authority. (Hindi: टकसाल)
Example: The coins were freshly printed at the government mint.

Meanings of the other options:

· (a) Office: A place for administrative work. (Hindi: कार्यालय)
· (c) Mine: A place to extract minerals. (Hindi: खदान)
· (d) Barn: A farm building used for storage or animals. (Hindi: अनाज/पशुरखनेकीजगह)