Cultures vary across the world, but all cultures, regardless of the location, can help geographers answer which question?

A.
How does culture influence behavior?

B.
Why are some cultures so widespread?

C.
How do habits form?

D.
Why are some customs practiced?

E.
Where do the most popular cultures originate?

The question that can be answered by studying cultures across the world is:

D. Why are some customs practiced?

To answer this question, geographers study various aspects of cultures such as beliefs, traditions, social norms, and customs. By understanding different customs and their origins, geographers can shed light on why certain practices are prevalent in specific regions or communities. They can analyze historical, environmental, and social factors that have contributed to the development and preservation of these customs. Studying cultures can provide insights into the values, identities, and societal structures of different groups of people, ultimately helping to answer the question of why certain customs are practiced.