Final answer:
The rate of elevation change during a scuba diver's ascent is managed by buoyancy and is subject to Boyle's law, but we need specific depth and ascent time data to provide an exact figure.
Step-by-step explanation:
The question regarding the rate of elevation change for a scuba diver during ascent relates to understanding buoyancy and the pressure changes in scuba diving. These concepts involve Boyle's law, which details the inverse relationship between the volume of a gas and its pressure. In this context, the diver's buoyancy compensator device (BCD) plays a crucial role in controlling ascent through water. The rate of elevation change can be calculated by considering the time taken and the depth from which the diver begins to ascend.
Unfortunately, without having specific depth and time data, we cannot calculate an exact rate of elevation change. However, a general fact is that scuba divers usually follow a standard ascent rate to avoid decompression sickness, which often falls within the range of 10 to 20 feet per minute.