The option of saving money that offers the most liquidity is a piggy bank. (option C)
Liquidity can be described as the ease with which an asset can easily be converted to cash. Paper currency and coins is the most liquid assets. Real estate is illiquid because it takes a long time for a real estate asset (e.g a house) to be sold and proceeds converted to cash.
Liquid assets earn less returns when compared with assets that are less liquid. This is because illiquid assets earn an illiquidity premium. An illiquidity premium compensates holders for holding an illiquid asset.
Money in a piggy bank is already in cash or coins and there is no need to convert it to cash again. Also, money in a piggybank is more accessible than the other options.
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