What is the ascent gas volume for Dive Profile A?

The ascent gas volume for Dive Profile A is calculated based on a few key factors including the depth of the dive, the composition of gases used, and the diver's breathing rate. In this context, the correct value of 14.6 cubic feet represents a calculated volume needed for a safe ascent from the dive site, allowing for any required safety stops and ensuring that the diver has enough gas to complete the ascent comfortably.

When divers ascend, it’s essential to account for the expanding gas as it comes to the surface due to decreased pressure. Thus, understanding the gas volume necessary for a safe ascent involves calculations that factor in these physical principles.

The calculation would typically utilize the diver's exposure profile to determine how much gas they would require to reach the surface while maintaining safety. This critical volume must ensure the diver has sufficient gas to manage their ascent safely, including any allowances for unexpected situations that may arise.

In this case, the other answer choices represent volumes either too low or too high for the parameters set by Dive Profile A, demonstrating a miscalculation in gas volume based on ascent rates, necessary safety stops, or failure to consider the proper buoyancy and breathing rates at different depths.