Which of the following is an example of a profitability ratio?

The choice of Return on Assets as an example of a profitability ratio is grounded in its definition and purpose within financial analysis. Profitability ratios are used to assess a company's ability to generate profit relative to its revenue, assets, equity, or other financial metrics. Return on Assets (ROA) specifically measures how effectively a company is utilizing its assets to produce earnings. It is calculated by dividing net income by total assets, providing insight into how well the company is converting its investments into profits.

This ratio is crucial for investors and stakeholders as it highlights the efficiency of asset management and indicates how well a company is performing in generating profits from its resources. Understanding ROA is essential for analyzing financial health, as a higher ROA suggests more efficient use of assets.

The other options represent different categories of financial metrics. For example, the Debt-to-equity ratio is a measure of financial leverage, indicating the proportion of debt and equity financing. The Current ratio assesses a company's short-term liquidity by comparing current assets to current liabilities. Net working capital measures the difference between current assets and current liabilities, reflecting a company's short-term financial health. None of these metrics are designed specifically to evaluate profitability, which reinforces why Return on Assets is the clear choice for this question.