Final answer:
Surface-level diversity includes physical qualities, gender, ethnicity, and age, as these are immediately apparent traits that can lead to stereotypes and influence social dynamics.
Step-by-step explanation:
The concept of surface-level diversity refers to the observable and typically physical traits that differentiate individuals. Among the provided options, physical qualities, gender, ethnicity, and age are all elements that could be considered aspects of surface-level diversity. This is due to the fact that they are immediately apparent and can lead to immediate judgments or stereotypes about individuals. However, it is essential to understand that surface-level diversity can also influence deeper personal experiences, social interactions, and societal dynamics. While physical qualities such as height or hair color are the most evident upon first look, gender, ethnicity, and age also often present visual cues that can lead to surface-level judgments.