Question

quartzite is a rock that can form at the boundaries of tectonic plates. over time, sandstone buried at the boundary is folded and changed by pressure and heat. the sandstone becomes quartzite. quartzite is most likely a(n) ______ rock. choose one option a igneous b sedimentary c metamorphic

Explanation:

Metamorphic rocks form from existing rocks (like sandstone here) that undergo changes due to heat and pressure. Igneous rocks form from cooled magma/lava, and sedimentary rocks form from sediment accumulation. Since quartzite forms from sandstone via pressure and heat, it's metamorphic.

Answer:

C. metamorphic