Identifying Money's Core Functions

Steps:

• Recall the three primary functions of money from economics: medium of exchange, store of value, and unit of account.
• Review each option against these standard functions.
• Eliminate A, B, and C as they match the definitions directly.
• Identify D as unrelated to money's role in transactions or measurement.

Why D is correct:

• Money functions as a medium of exchange, store of value, and unit of account per economic theory; "measure of satisfaction" refers to utility in consumer theory, not money's purpose.

Why the others are wrong:

• A: Money serves as a medium of exchange by facilitating trade without barter.
• B: Money acts as a store of value by retaining purchasing power over time.
• C: Money provides a unit of account for pricing goods and services consistently.

Final answer: D