Overfilling a refrigerant container is extremely dangerous because of the high pressures generated. The generation of pressure is the result of what?

Correct Answer: Option D — hydrostatic pressure of the expanding liquid

Overfilling a refrigerant cylinder leaves no vapor space for liquid expansion. As ambient temperatures rise, liquid expansion exerts immense hydraulic pressure against container walls, quickly exceeding burst pressures and causing catastrophic rupture due to liquid being virtually incompressible.