Is the set of programs that enables the computer's hardware devices and application software to work together?

A driver

First of all, it seems like you're just posting homework questions on this site because you're too lazy to do it yourself. Regardless, the answer can either be DRIVERS or Operating System, though the...

System

System

This is actually a very complex question, and would probably be difficult to fully answer with even with an entire textbook. But I think the most crutial element serving as a "bridge"...