Final answer:
Henry's Law explains the accumulation and release of nitrogen gas during scuba diving, leading to decompression sickness.
Step-by-step explanation:
The law that best explains the phenomenon described in the question is Henry's Law.
Henry's Law states that the amount of gas dissolved in a liquid is directly proportional to the partial pressure of the gas above the liquid. In the case of scuba diving, as the diver descends to greater depths, the pressure increases, causing more nitrogen gas from the compressed air to dissolve into the diver's tissues and blood.
When the diver ascends too quickly, the ambient pressure decreases, leading to the rapid release of nitrogen gas from the tissues, forming bubbles that can cause decompression sickness.