Select the most appropriate meaning of the idiom.

To have a gut feeling

To feel an instinct or intuition

The most appropriate meaning of the idiom "to have a gut feeling" is:To feel an instinct or intuition.

Explanation:
Having a gut feeling refers to having a strong intuition or instinct about something, often without any logical explanation. It's a sense of knowing or feeling that something is true or will happen, based on one's intuition or inner sense rather than conscious reasoning. Therefore, "to feel an instinct or intuition" accurately captures the meaning of the idiom.