The temperature at which all molecular motion stops is known as: a) Absolute temperature b) molecular temperature c) absolute zero d) Molecular zero e) none of these.

c) absolute zero

Explanation:

The fourth principle of thermodynamics posed by the Romanian economist Nicholas Georgescu-Roegen, explains the presence of absolute zero is said that at this temperature the internal molecular movement becomes zero making the internal energy (U) zero, absolute zero is equivalent to - 273.15C or 0Kelvin