__ is the transition directly from a gas to solid?

The transition directly from a gas to a solid is known as deposition. This process occurs when gas molecules lose energy and transition into a solid state without passing through the liquid phase. An example of deposition can be seen in the formation of frost, where water vapor in the air directly turns into ice.

Sublimation, the first option, refers to the transition from a solid phase directly to a gas, bypassing the liquid state, and is distinct from the process of deposition. Evaporation involves the transformation of a liquid into a gas, while condensation describes the change from gas to liquid. Both evaporation and condensation evaluate different phases and do not pertain to the direct transition from gas to solid. Understanding these terms helps clarify the specific physical changes that matter can undergo under various conditions.