Answer: Quick ratio

**Explanation:** The correct answer is **A. Quick ratio**, as it is a liquidity ratio that assesses a company's capacity to fulfill its short-term obligations using its most liquid assets. - **Option B (Operating profit margin)** is incorrect because it is a profitability ratio, reflecting a company's ability to generate earnings from its operations, not its short-term liquidity. - **Option C (Days of payables outstanding)** is also incorrect, as it is an activity ratio that measures the efficiency of a company's payables management, not its liquidity position.

Author: LeetQuiz Editorial Team