During melting in the asthenosphere:
a) rocks in the source region generally are completely melted
b) partial melting produces a magma that is more felsic than the source
c) melting of the mantle generally produces felsic magma
d) melting of continental crust generally produces mafic magma
e) none of the above
Answer: b) partial melting produces a magma that is more felsic than the source
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