Which part of a compound bow helps reduce vibration?

A stabilizer is designed specifically to help reduce vibration in a compound bow. When an arrow is released, the bow experiences a significant amount of vibration, which can affect accuracy and stability. The stabilizer attaches to the bow's riser and helps to absorb and dissipate the energy generated from the release, minimizing the amount of vibration that travels through the bow and into the shooter's hands. This not only provides a more comfortable shooting experience but also enhances accuracy by promoting better control of the bow during and after the shot.

The other components mentioned, such as the arrow rest, cam, and string, serve different purposes in the functionality of a compound bow. The arrow rest supports the arrow during aiming and release, while the cam is part of the bow's system that helps with the draw cycle and let-off, making it easier to draw the bowstring. The string, of course, transmits energy to the arrow upon release but does not have a role in stabilizing the bow's vibrations. Thus, the stabilizer is the component specifically engineered to mitigate vibration, making it the correct choice.