Respuesta :
The Practice of Fractional Reserve banking means that the Banks only keep a portion of their deposits as cash reserves. Hence option D is correct.
Fractional Reserve Banking
In order to theoretically expand economy by creating Capital for lending, Banks create Fractional Reserve system. It is a system in which only a fraction of deposits are actually saved as cash on hand and available for withdrawal.
It is based on the notion that each and every depositor will not come for withdrawal in a single day. Hence, the option D which says "banks only keep a portion of their deposits as cash reserves" is Correct.
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