Question 1: The true statement about the functions of money is:
Money serves three essential functions: medium of exchange, store of value, and unit of account.
Question 2: How does money enhance the efficiency of transactions compared to bartering? The correct response is:
It allows for immediate exchanges without negotiation.
Using money simplifies transactions by providing a universally accepted medium that facilitates trade without the need for double coincidence of wants, which is a requirement in bartering.