Answer: Lee should ask closed ended questions.
Explanation:
As a salesperson, the body language of your prospective customer matters when a good is being advertised to the person. Regarding the question, Lee wants to tell the prospective customer about the refrigeration units. Since the face of the prospective buyer looks tensed with wrinkle forehead and avoiding eye contact with Lee, the best thing for Lee to do is to ask her closed ended questions.
A closed ended question is a limited set of responses that can be answered with symbol number or symbol that indicates a response. Ratio questions, multiple choice, ordinal questions gives closed ended responses. Lee should ask closed ended questions because they are quicker and easier to answer.