Final answer:
The diachronic perspective in social studies focuses on human diversity through time, analyzing how diversity has changed over the years and studying cultural evolution.
Step-by-step explanation:
The diachronic perspective in social studies does focus on human diversity through time. It examines how diversity has changed over the years and how the known fossil record reflects these changes.
An example of this is the study of cultural evolution, where historians analyze the development of different cultures and societies throughout history, taking into account factors such as social, economic, and political changes. This perspective helps us understand the complexities and variations of human diversity across different time periods.