Final answer:
Statement b) "I understand this is a difficult time for you." is an example of positive face needs because it acknowledges Reba's emotions and shows empathy.
Step-by-step explanation:
Positive face needs are the desire to be liked, appreciated, and approved by others. In the given scenario, statement b) "I understand this is a difficult time for you." is an example of positive face needs. This statement acknowledges Reba's emotions and shows empathy, which helps to maintain her positive self-image. It demonstrates that Denise is sensitive to Reba's feelings and is offering support without giving advice or making assumptions. By comforting Reba, Denise is fulfilling Reba's positive face needs.