the answer is unit of account
Julio is using money as a unit of account. The function of money as a unit of account allows us to quickly compare the value of different things by stating the value in a common unit, in this case U.S. Dollars.
Julio is using money as a unit of account to compare the prices of the games he wants to buy. This function of money enables him to express prices in a common format, allowing for easy comparison. Therefore, the correct answer is C. unit of account.
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