How does changing your breath control impact buoyancy?

Changing your breath control impacts buoyancy primarily by altering lung volume and displacing water. When you take a deep breath and fill your lungs with air, your lung volume increases, which reduces your overall density. In a buoyancy context, this essentially allows you to float more easily, as you become less dense than the surrounding water. Conversely, exhaling decreases your lung volume, thus increasing your density and causing you to sink since you're now heavier relative to the water.

This principle of changing lung volume directly affects your buoyancy control while diving. A diver can use breath control to ascend or descend in the water column by managing their breath. When a diver wants to ascend, taking a deep breath can help them rise, while exhaling can assist in descending.

The other options touch on related factors, but they do not specifically address how breath control influences buoyancy. While adjusting dive equipment can affect buoyancy, it is not directly related to breath control; similarly, underwater resistance may relate to movement but does not have a direct impact on buoyancy in the same way lung volume does.