The geometric shape of crystals indicate that: A)the atoms which make the mineral can take any form
B)the inside of the crystal is liquid
C)the atoms have an orderly arrangement
D)it was formed from a mold

C) The atoms have an orderly arrangement

Explanation: Every crystal has an orderly, internal pattern of atoms, with a distinctive way of locking new atoms into that pattern to repeat it again and again. The shape of the resulting crystaL-such as a cube (like salt) or a six-sided form (like a snowflake)-mirrors the internal arrangement of the atoms.