The cratonic platform of North America is
A) a low-lying region where Precambrian rocks crop out.
B) a low-lying region where Precambrian rocks are covered by Phanerozoic sedimentary strata.
C) a region of compressed rock located behind a volcanic arc at a convergent continental margin.
D) a low-lying region of oceanic crust surrounded by Proterozoic crustal blocks.
Correct Answer:
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