Select the most appropriate meaning of the idiomatic expression given.

To poke one’s nose into

To take interest in others’ affairs

The most appropriate meaning of the idiomatic expression "poke one's nose into" is to take interest in others' affairs.

The other options are incorrect.

• "To clean one's nose with a twig" is not the same as poke one's nose into. Cleaning one's nose with a twig is a personal hygiene activity, while poke one's nose into is an expression that means to take interest in others' affairs.
• "To bury oneself in another matter" is not the same as poke one's nose into. Burying oneself in another matter means to focus on something else, while poke one's nose into means to take interest in others' affairs.
• "To insert something in another's nose" is not the same as poke one's nose into. Inserting something in another's nose is a medical procedure, while poke one's nose into means to take interest in others' affairs.

The idiom "poke one's nose into" comes from the idea of someone sticking their nose into something that does not concern them. In the same way, someone who pokes their nose into something is someone who is taking interest in something that is not their business. For example, you might say that a nosy neighbor is poking their nose into your affairs if they are always asking questions about your personal life.