Final answer:
According to Archimedes' principle and the ideal gas law, the volume of air inside a ball submerged at 99 feet will remain 2 cubic feet when taken to the surface.
Step-by-step explanation:
The question involves applying principles such as Archimedes' principle and the ideal gas law to determine the change in volume of air when brought from a deep level under water to the surface. According to Archimedes' principle, the volume of an object is not affected by the depth at which it is submerged. The ideal gas law, however, can predict changes in volume based on pressure and temperature. With this in mind, and given no temperature change, the volume of a ball with 2 cubic feet of air will remain 2 cubic feet, regardless of depth. Choices b, c, and d, which suggest the volume would increase to 3, 4, or 5 cubic feet, are not correct according to these principles.