Stacey has just received her first paycheck.

Discretionary income is the money remaining after paying for necessities like housing, food, and clothing, available for non-essential spending. Option A (disposable income) is income after taxes, including money for necessities. Option C (supplementary income) is not a standard term. Option D (passive income) is earned without active work, like investments. This question aligns with the Accounting and Finance category, emphasizing personal finance.