Select the alternative that best expresses the meaning of the given idiom/phrase

Select the alternative that best expresses the meaning of the given idiom/phrase.

On the back burner

a)            to be done or considered later

b)            To be in behind or concealed and not visible

c)            To be in a position that is important and significant

d)            To say something bad about someone/something behind the people

Sol:

If something is on the back burner, it is temporarily not being dealt with or considered, especially because it is not urgent or important.