Final answer:
A firm's capital structure refers to the firm's proportion of financing from current and long-term debt and equity.
Step-by-step explanation:
A firm's capital structure refers to the firm's proportion of financing from current and long-term debt and equity. It represents how the firm chooses to finance its operations and investments. For example, a firm may use a combination of borrowing from banks or issuing bonds, as well as selling stock to raise the financial capital needed for projects or expansion.