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MissPhiladelphia

I believe the correct answer from the choices listed above is option D. Sandstone and basalt can be changed by heat and pressure to form metamorphic rocks. They are formed when rocks are close to some molten magma, and so get heated up. Hope this answers the question.

The correct answer is option (d)- metamorphic rocks.

The metamorphic rocks are the rocks formed by the existing rock types by the process of metamorphism. The sedimentary, igneous or other metamorphic rocks can undergo transformation due to the effect of the heat and pressure.

Hence, the sandstone and the basalt under constant heat and pressure, result in the formation of the metamorphic rocks.

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