To “spill the beans” means:

The idiom "to spill the beans" is a common English expression that means To reveal secret information. It implies disclosing something that was intended to be kept confidential or hidden, either accidentally or intentionally. The phrase is often used in contexts where a secret is prematurely or unexpectedly brought to light, often causing surprise or disruption. Understanding idioms is crucial for comprehending nuanced meanings in language.

• "To misbehave" is incorrect; the idiom does not relate to bad conduct.
• "To talk irrelevant" is also incorrect; while revealing a secret might be irrelevant in some situations, the core meaning is about the act of disclosure itself, not the relevance of the information.
• "None of these" is false, as the correct meaning is clearly provided.