Answer:
C. deep-level diversity
Step-by-step explanation:
Deep-level diversity is a type of diversity among individuals that is not easily observable, and includes traits such as working styles, values, beliefs, cognitive, or decision-making styles. These are usually psychological. These traits are less observable.
According to the information given in the question above about the Olivia and her employees, we can infer that Olivia and her employee display deep-level diversity, as the designers have traits that are not easily observable such as the different working styles they have while they still work effectively together as a team.