Convert Cannondale Quick5 Hybrid to a road bike?
This kind-of depends on what you mean by 'road bike'. The definition can include road-oriented hybrids such as yours, touring bikes and drop-bar 'racing' bikes. Let's assume you you want a 'racing' style bike designed for higher speeds.

It's possible to make the conversion, in a way; but it will probably not be worth it in terms of cost and you'll end up with a poor compromise that isn't really what you want.

Others have provided answers that deal with mountain to road component swaps and compatibility issues. If you need to replace the bars shifters and entire drivetrain you would do better to sell the hybrid and buy a bike of the type you want.

The other major problem is frame geometry. Your hybrid has a 'relaxed' more upright geometry with slower, more stable steering; racing bikes have a more 'aggressive' leant-forward geometry with faster, less stable steering. Even if you put a drop bar on the hybrid you are not getting away from the intrinsic geometry of the hybrid, so you won't really end up with a racing bike.

BTW, if you want a slightly more aggressive riding position on the hybrid, you can lower the handlebars by lowering the stem on the steerer tube by moving one or more of the spacers from below it to above it, and flipping the stem over so it points slightly downwards instead of upwards.