Select the most appropriate meaning of the underlined idiom.

Bincy’s mother kept her cards close to her chest.

The correct answer is Kept her plans and thoughts hidden.

Explanation:

The idiom "keep one's cards close to one's chest" (or "play one's cards close to one's chest") originates from card games like poker, where players hold their cards close to their chest to prevent opponents from seeing them and figuring out their strategy.

In a general context, this idiom means to keep one's plans, intentions, ideas, or thoughts secret and hidden from others.

Therefore, when Bincy's mother kept her cards close to her chest, she was keeping her plans and thoughts hidden, making the first option the correct meaning.