As the responder searched for the similar question since the choices aren’t given. The sentence or phrases which has most likely to be a considered cliché is “look before you leap”. This mantra has probably the most used and a common sense. Some say this is also a proverb which more likely qualifies to be a cliché. As they define, cliché is word, phrase or sentence that has been used over and over again where it has been now a trite.
As for this problem together with the options presented with it, the most probable answer and the most likely one to be the correct answer is Who
Whose would be referring to be asking as to the ownership of an object or something. Whom, on the other hand, would be more on the person directed to or to who should the action be done to. Who, in this case, would act as someone who would do the act itself.
