Final answer:
The Debt-to-equity ratio is not used to determine liquidity. Liquidity ratios assess a company's ability to pay off short-term debts and obligations.
Step-by-step explanation:
The measure that is not used to determine liquidity is the Debt-to-equity ratio. Liquidity ratios are used to measure a company's ability to pay off short-term debts and obligations. The current ratio and quick ratio are both liquidity ratios that assess a company's ability to meet short-term liabilities using current assets, while the inventory turnover ratio measures how efficiently a company manages its inventory.