According to kinetic theory of gases, at absolute zero temperature:

Question

G1 Physics · Accepted Answer

Step 1: In classical kinetic theory, mean translational kinetic energy is (3/2)kBT. Step 2: At absolute zero T = 0 K, this classical kinetic-energy expression becomes zero. Step 3: Therefore the intended classical-model answer is that translational molecular motion stops. Step 4: Modern quantum physics retains zero-point motion, so this is an idealised classical statement. Final answer: (C).