Select the most appropriate meaning of the idiom

Looking for a needle in a haystack.

Attempting something impossible

The most appropriate meaning of the idiom "looking for a needle in a haystack" is 2. Attempting something impossible.

This idiom means that someone is trying to find something that is very difficult or unlikely to be found. It is often used to describe a situation where someone is trying to solve a problem that is too big or complex.

The other options are incorrect.

• To be interested in sewing and embroidery means to enjoy making things with needles and thread.
• To search for small things to do means to look for activities that are not very time-consuming or demanding.
• To suddenly decide to do farming means to make a quick and unexpected change in career or lifestyle.