Step 1 - Brief revision of Boyle's Law
Boyle's law is a law concerning the behavior of gases. It states that the pressure and the volume are inversely proportional given that the temperature is kept constant.
That is, if we increase the pressure, the volume will decrease. This principle is behind the proper functioning of our lungs, for example. This can also be described mathematically as:
Step 2 - Choosing the right alternative
As we have seen in step 1, we can use the following formula to work with Boyle's Law:
Therefore, the correct alternative is item d.