Question

igneous rocks can be formed from magma that solidifies deep beneath the earth’s surface. when the magma solidifies slowly, it results in rocks with large crystals and a coarse texture. when it cools quickly, it creates more smooth and shiny rock with fine grains. sedimentary rocks are made from the weathering and erosion of pre - existing rocks. if the sediment is buried deeply, it becomes compacted and cemented. sedimentary rocks also form from organic material and often contain fossils of pre - existing rocks. metamorphic rock is a result of a transformation of a pre - existing rock subjected to high heat and pressure. this causes the minerals in the rock to become unstable so they either reorient themselves into layers, giving them a striped look or recrystallize into larger crystals. based on the reading, how would you classify this rock? a sedimentary rock because of its layers. b metamorphic rock because of its stripes. c igneous rock because it has large crystals. d sedimentary because of the presence of fossils.

Explanation:

The text states that metamorphic rocks are formed when a pre - existing rock is subjected to high heat and pressure, causing minerals to reorient into layers giving a striped look. Option B matches this description. Sedimentary rocks are formed from weathering and erosion and often have fossils but not necessarily striped due to layering from heat and pressure like metamorphic rocks. Igneous rocks form from magma solidification and may have large crystals from slow cooling but not striped due to re - orientation from heat and pressure.

Answer:

B. Metamorphic rock because of its stripes.