California Cosmetology Practice Exam

The three states of matter refer to the physical forms that matter can exist in - solid, liquid, and gas. Hence, options A, C, and D are incorrect because they do not include all three of these states. Option A incorrectly includes "vapor" instead of "gas", while option C includes "plasma" which is not one of the three main states of matter. Option D includes "gel" which is a colloid and not a true state of matter like the other options. Therefore, option B is the only answer that correctly lists the three states of matter.