Answer: The phase change process in which solids gets converted to gases is sublimation.
Explanation:
For the given options:
Option a: Condensation
It is a type of process in which phase change occurs from gaseous state to liquid state at constant temperature.
[tex]Gas\rightleftharpoons Liquid[/tex]
Option b: Melting
It is a type of process in which phase change occurs from solid state to liquid state at constant temperature.
[tex]Solid\rightleftharpoons Liquid[/tex]
Option c: Sublimation
It is a type of process in which phase change occurs from solid state to gaseous state without passing through the liquid state at constant temperature.
[tex]Solid\rightleftharpoons Gas[/tex]
Option d: Deposition
It is a type of process in which phase change occurs from gaseous state to solid state without passing through the liquid state at constant temperature.
[tex]Gas\rightleftharpoons Solid[/tex]
Hence, the phase change process in which solids gets converted to gases is sublimation.