Concept:The idiom 'Spill the beans' means to reveal a secret or disclose confidential information, often unintentionally. (राज़ खोल देना)Explanation:This phrase is used when someone accidentally or deliberately tells a secret. For example, 'He spilled the beans about the surprise party.' The correct meaning is 'Reveal a secret'. The other options are incorrect: 'Waste food' (खाना बर्बाद करना), 'Hide a fact' (तथ्य छुपाना), and 'Lose patience' (धैर्य खोना).Answer:Option C: Reveal a secret