Select the word, which means the same as the group of words given.
A place where coins are made

The phrase “A place where coins are made” refers to the official establishment where metallic currency is produced by stamping metal blanks with the required designs and denominations. The precise English word for such an establishment is “mint.”

Checking each option:

Option A - reserve: a supply saved for future use; not related to manufacturing coins.
Option B - bank: a financial institution that deals with deposits, loans, and other monetary services; it does not manufacture coins.
Option C - mint: the government-authorised place where coins are manufactured.
Option D - exchange: a marketplace or institution where goods, services, or currencies are traded; again, not where coins are produced.

Only Option C conveys the exact required meaning.

Option C which is: mint