Final answer:
A material fact that must be disclosed by a licensee is a fact that may have varying effects on a buyer based on their needs and values. Therefore, the correct option is D.
Step-by-step explanation:
A material fact that must be disclosed by a licensee is a fact that is relevant and significant in the decision-making process of a buyer. The answer to this question is D. A material fact may have more or less of an effect on a buyer based on the buyer's needs and values.