What kind of model is this?

Probably B. but I’m close to failing if I miss this question

i think that it is a computer model

the gas collects in coils that then becomes a liquid that then flows through the coils inside the refrigerator

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.