The money supply, or M1, is made up of cash, demand deposits, and other liquid deposits, such as savings accounts.
There are three different sorts of money in the economy, but as members of the general public, we have only ever utilized cash and your bank account balance.
Measurements of the US money supply, referred to as the money aggregates, include M1, M2, and M3. Money in circulation (M1) also includes bank deposits that are checkable. M2 consists of M1 plus savings deposits ($100,000 or less) and money market mutual funds. Large time deposits made in banks are also included in M3.
According to a standard definition, the money supply is a collection of secure assets that individuals, corporations, and governments can use to make purchases or hold as short-term investments.
Therefore the correct answer is option A) smart card
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