Minerals can form deep inside earth’s crust by a. cleavage and fracture. b. friction along faults. c. crystallization of melted materials. d. evaporation of ancient seas.

The correct answer that would best complete the given statement above is option C. Minerals can form deep inside earth's crust by the crystallization of melted materials. There are two ways on how minerals are formed: crystallization of melted materials and the crystallization of materials dissolved in water. Hope this helps!

c. crystallization of melted materials

Explanation:

A mineral is composed of the various rock-forming crystals and hee crystals tend to recrystallize through the process of evaporation and the deposition of sediments that are bought and deposited from within the earth and these make up most of the constituents of the crustal rocks. As they are naturally occurring in a pure form. There physical and chemical properties also plays an important role in the formation of crystal of the mineral. The hardness, opacity, and color are all dependent on the inorganic and organic constituents of the rocks.

In a right-angled triangle: 1- the hypotenuse is the longest side2- we can apply pythagorean rule which states that: (hypotenuse)^2 = (side1)^2 + (side2)^2for the given triangle,longest side is 15 cm  side1 = 9 cmside2 is 12 cm  to check whether the triangle is right-angled or not,compare (15)^2 to the summation of (9)^2 and (12)^in other words, compare 225 to the summation of 81 and 144if they are both equal, then the triangle is right-angles, otherwise, it is not.you haven't provided the diagram showing her work, so i cannot tell the choice. however, apply my explanation to the question you have.