What Change Introduced by Blumenbach in the Vary Late 1700s

Multiple Choice

What change introduced by Blumenbach in the vary late 1700s to Linnaeus's four-part typology of humankind was even more important than his adding a fifth race?

A) The prioritization of physical appearance
B) His repurposing of the cardinal directions (north, south, east, west)
C) Reference to specific regions of the globe
D) The prioritization of environment
E) Reference to genetics