At the Mid-Ocean Ridge, the crust is pushed outward so as you move away from the ridge the crust gets.

The crust gets cooler, thicker, and more dense

Explanation:

Oceanic crust slowly moves away from mid-ocean ridges and sites of seafloor spreading. As it moves, it becomes cooler, more dense, and more thick. Eventually, older oceanic crust encounters a tectonic boundary with continental crust.

b is correct

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southwest asia

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