Final answer:
Return on common stockholders' equity is most closely related to the profit margin and leverage, specifically the debt to assets ratio.
Step-by-step explanation:
Return on common stockholders' equity (ROE) focuses on the profitability relative to the equity that common shareholders have invested in the firm. ROE can be influenced by a company's profit margin, which is the accounting profit divided by total revenues, and leverage, expressed in the debt to assets ratio. Among the options presented, profit margin and leverage (debt to assets ratio), mentioned in option (d), are most closely related to ROE because they reflect both the net income generated per dollar of revenue and the impact of financial structure on equity returns. Interest rates impact the cost of borrowed funds, which can also affect ROE, but are not a direct component of it.