I think it's B, if they are geographically around one another and share some racial background they are related. DNA, for example does prove we can be closely related. Genetics and such.
Really hope this helps, tell me if i'm wrong!
Answer:
Both form from magma that flows horizontally (D)
Explanation:
Penn answer
Humans have once settled in areas that are now covered in glaciers.
The Pangaea Earthquake.
The Green House Effect.
1,000 years later...
But beginning in the late 18th century, the Industrial Revolution would raise living standards and spur growth.
Answer:
D) along the western coastline
Explanation: