18. How are these colloid plays an important role in our daily life?
I. It is used in dialysis to stimulate the action of the human kidney.
II. Used in pottery such as vases, figurines, and plates.
III. Used in the artificial fiber industry
IV. Colloids are used in the pharmaceutical industry in the purification of colloidal machine.
A I & II only
B. III & IV only
C. I, II, & III only
D. I, II, III, & IV​