From the given options, choose the phrase that best explains the idiom.

Has gone down the drain.

has been wasted

The phrase that best explains the idiom "has gone down the drain" is has been wasted. The idiom comes from the literal meaning of something going down a drain, which is to be lost or discarded. In the same way, when something is said to have "gone down the drain," it means that it has been wasted or lost.

The other options are not as accurate. Has been collected means that something has been gathered together. Has been spent means that something has been used up. Has been reserved means that something has been set aside for a specific purpose.