Answer: Option (A) is the correct answer.
Step-by-step explanation:
Sublimation is a process in which molecules of a solid substance are converted directly into gaseous phase without undergoing liquid phase.
This is because solid particles absorb the heat from their surroundings due to which bond between the molecules are broken down. As a result, molecules gain kinetic energy and they move rapidly into the atmosphere.
Thus, we can conclude that in the given situation the particles move fast enough that the attraction between particles is overcome completely.