Explanation:
Correct Answer: Crystallography is the branch of technology that research the shape, residences, and formation of crystals. It is a key field in mineralogy, chemistry, and substances technology.
Other Options:
(B) Waves - The look at of waves falls below wave principle or physics, no longer crystallography.
(C) Light - This is studied in optics, no longer crystallography.
(D) Water - This is studied in hydrology or chemistry, not crystallography.