Pretty sure the answer is b
Answer:
In geology, the term sial refers to the composition of the upper layer of Earth's crust, namely rocks rich in aluminium silicate minerals. It is sometimes equated with the continental crust because it is absent in the wide oceanic basins, but 'sial' is a geochemical term rather than a plate tectonic term.
Explanation:
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Well I think it's gonna be C - 90° N and 90<span>° S - because those latitudes are located exactly on both north and south poles and there's nothing more likely to see glaciers than the poles themselves.</span>
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