If Boyles' law describes the relationship between the pressure and volume of ideal gases, what statement is true?

Correct Answer: Option B — If the temperature remains constant, the volume of a given mass of gas is inversely proportional to its pressure.

Boyle's Law states that for a fixed mass of an ideal gas at a constant temperature, the absolute pressure is inversely proportional to the volume. If the pressure increases, the volume must decrease proportionally, and conversely, if the pressure decreases, the volume must increase to maintain the constant product.