Assuming this is a true or false question, true.
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!
In order for the Earth to get larger, more mass would have to be added. Since no new mass is added in the process, It's size doesn't increase.
Canada, Mexico, and the United States