Select the most appropriate meaning of the given idiom.

All eyes and ears

To be attentive

The most appropriate meaning of the idiom "all eyes and ears" is to be attentive.

The other options are incorrect.

• To be attentive means to be paying close attention to something.
• To threaten someone means to say or do something that makes someone feel scared or afraid.
• To believe everyone means to accept what everyone says without question.
• To be full of bluster means to talk a lot but not do much.

The idiom "all eyes and ears" comes from the idea of being so attentive that you are looking and listening with all of your senses. In the same way, to be all eyes and ears means to be paying close attention to something and not missing a single detail. For example, you might say that you were all eyes and ears when your teacher was giving a lecture.