In Looking for the Origin of a Language Family, Geographers

Multiple Choice

In looking for the origin of a language family, geographers commonly find:

A) that the original language is still used in some remote areas.
B) they must guess at the hearth area since language development happened so long ago.
C) ancient documents explain the development of language families.
D) most language families show limited diffusion because few people migrated in the past.
E) most language families are very spatially compact.