If You Were a Geologist Looking to Identify the Source

Multiple Choice

If you were a geologist looking to identify the source of volcanic magma, you would search for evidence of a what? ______________

A) area in the upper mantle where hot magma forms a volcanic center
B) divergent boundary between two plates
C) spreading center where new crust is formed
D) rising column of hot, plastic mantle rock called a mantle plume