Which of the following best describes buoyancy?

Buoyancy refers to the upward force that a fluid exerts on an object placed in that fluid, allowing the object to float or rise. When an object is submerged in a liquid or gas, it experiences this force due to the differences in pressure on the top and bottom surfaces of the object. The tendency to float, therefore, is directly related to buoyancy, as it determines whether an object will sink or rise in a fluid based on its density relative to that of the fluid. Objects that are less dense than the fluid will experience a greater buoyant force, resulting in floating. This concept is central to understanding how various objects interact with fluids, whether they be liquids or gases.