The capital structure of a company can best be summarized as its:

The capital structure of a company refers specifically to the mix of different forms of financing used to fund its operations and growth. This primarily involves the proportion of equity provided by shareholders and the debt acquired through loans or bonds. Understanding this mix is essential, as it influences a company's risk profile and its overall cost of capital.

When a company has a higher proportion of debt in its capital structure, it increases financial leverage, which can enhance returns during good financial performance but may also elevate risk during downturns. Conversely, a structure with more equity may be less risky but could imply a dilution of ownership and potentially a higher cost of equity.

Other options, while related to a company’s financial status, do not adequately define capital structure. For example, the ratio of assets to liabilities relates more to solvency rather than the specific mix of equity and debt used for financing. Income generated from operations pertains to revenue and profitability rather than the sources of funding. Lastly, the balance of revenue and expenses focuses on operational performance and does not directly speak to how a company finances its activities. Thus, the correct choice emphasizes the essential components of capital structure – the balance between equity and debt.