Money's Core Functions vs. Properties

Steps:

• Identify the main functions of money: medium of exchange, unit of account, and store of value.
• Recognize that the question asks for a function, not a physical property.
• Eliminate options A, B, and C as they describe desirable traits of money, not its roles in the economy.
• Select D as it directly matches a primary economic function.

Why D is correct:

• Money functions as a medium of exchange by enabling buyers and sellers to trade goods and services without the inefficiencies of barter, as defined in economic theory.

Why the others are wrong:

• A: Divisibility is a property allowing money to be split into smaller units for precise transactions.
• B: Durability is a property ensuring money lasts through repeated use without deteriorating.
• C: Portability is a property making money easy to transport and use in various locations.

Final answer: D