Question

currency means:
the time at which something is supposed to begin
a drink in honor of or to the health of a person or
event
an overwhelming number or amount
the metal or paper medium of exchange that is
presently used

Explanation:

The word "currency" in the context of finance refers to the medium of exchange (metal or paper) that is currently in use. The other options describe different concepts: the time something is supposed to begin (not related to currency), a drink in honor (a toast, not currency), and an overwhelming number (a large quantity, not currency).

Answer:

the metal or paper medium of exchange that is presently used