Which of the following postulates of the kinetic-molecular theory best describes Boyle's law? Why?

• A. The postulate that best describes Boyle's law is "gas particles' kinetic energy is proportional to the Kelvin temperature," because this shows that gas is greatly affected by temperature.
• B. The postulate that best describes Boyle's law is "gas particles are always moving quickly and randomly," because this shows that gas spontaneously mixes with other gases.
• C. The postulate that best describes Boyle's law is "gas particles occupy a much smaller amount of space than the amount of space between particles," because this shows that gas can be compressed without gas molecule interactions.
• D. The postulate that best describes Boyle's law is "gas particle collisions are elastic, whether they are with other particles or the container wall," because this shows that most of the potential energy is converted into gas pressure.

Answer: (C)