the process of occurs when magma, lava, or a solute in a solution becomes a solid and the internal components will arrange its self in an
organized pattern.
a. unification
b. lithification
c. solidification
d. crystallization

D. Crystallization

Explanation:

Let's clarify the irrelevant terms first.

Now, for 2 terms that might confuse you: 'solidification' and 'crystallization' these also has precise scientific definition

Solidification is defined the process where substances in liquid phase changes its phase to solid. On first glance, this answer might seems correct, and yes, it is correct for this question. But not the most correct.

The keyword here is  

 'the internal components will arrange its self in an  organized pattern.'

Crystallization is a special case of Solidification where the atoms or molecules of liquid solidify by spontaneously arrange themselves in periodic, ordered, and organized pattern. It might or might not happen during solidification depending on cooling rate, viscosity of liquid, and other factors.

So, Crystallization is the most correct answer here.

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation: