Select the most appropriate meaning of the underlined idiom in the given sentence.

If someone is an old hand, then he/she is:

experienced

The most appropriate meaning of the underlined idiom in the given sentence is 3. experienced.

The idiom "old hand" means someone who is very experienced in a particular field or activity. It is often used to describe someone who has been doing something for a long time and has a lot of knowledge and skills.

In the sentence, the person being referred to as an old hand is likely to be very experienced in the field they are working in. They may have a lot of knowledge and skills, and they may be able to handle difficult situations with ease.

The other options are incorrect.

• To be forgetful means to have difficulty remembering things.
• To be aged means to be old.
• To be weak means to be lacking in strength or power.