$**$Objective Question $($Chemical Engineering$)$:$**$

Which statement accurately describes the principles of crystallization and their applications in purifying chemicals and producing pharmaceuticals?

A$)$ Crystallization principles are not applicable in the purification of chemicals or production of pharmaceuticals.

B$)$ Crystallization principles focus solely on contaminant removal and have no role in pharmaceutical manufacturing.

C$)$ Crystallization principles involve the separation of substances based on differences in solubility and are commonly used to purify chemicals and produce pharmaceuticals.

D$)$ Crystallization principles primarily hinder the purification process and are not utilized in chemical engineering applications.