Select the most appropriate meaning of the given Idiom:-

Few and far between

Not happening very often or uncommon

The most appropriate meaning of the idiom "few and far between" is not happening very often or uncommon. The idiom comes from the idea of two things being separated by a long distance, like two stars in the sky. In a figurative sense, to say that something is "few and far between" means that it does not happen very often or that it is very rare.

The other options are not as accurate descriptions of the meaning of the idiom. At a long distance is not the same as not happening very often. Between two long distance objects is not the same as not happening very often. Helpful effort to achieve something is not typically associated with the idiom "few and far between."