The option included in the M2 definition of money supply and not in the M1 definition is money market mutual fund shares.
M2 definition of money supply that includes cash, checking deposits, and near money. M2 is a broader measure of the money supply when compared with M1. It also less liquid than M1. M1 includes includes cash and checking deposits.
Here are the options:
a. Checkable deposits.
b. Currency held in banks.
c. Currency in circulation.
d. Money market mutual fund shares.
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