Question

the diagram below shows a rock with deformed structure and intergrown crystals. the rock was probably formed by a) sediments that were deposited on the ocean floor b) a meteor impact on earths surface c) volcanic lava that cooled on earths surface d) heat and pressure that changed a preexisting rock 2) during the permian period, sedimentary bedrock in the appalachian

Explanation:

The rock has a deformed structure and intergrown crystals, which are characteristics of metamorphic rocks. Metamorphic rocks form from pre - existing rocks due to heat and pressure.

• Option A: Sediments deposited on the ocean floor form sedimentary rocks, which usually have layers and may contain fossils, not deformed structures and intergrown crystals.
• Option B: A meteor impact can cause some shock - related features, but not the typical metamorphic features like deformed structure and intergrown crystals from heat and pressure on a pre - existing rock.
• Option C: Volcanic lava that cools on Earth's surface forms igneous (extrusive) rocks. These rocks have a different texture (e.g., fine - grained due to rapid cooling) compared to the described metamorphic features.
• Option D: Heat and pressure changing a pre - existing rock is the process of metamorphism, which can create deformed structures and intergrown crystals.

Answer:

D. heat and pressure that changed a preexisting rock