Explanation

Standard geological estimates state that igneous and metamorphic rocks make up about 90-95% of the Earth's crust by volume, while sedimentary rocks cover about 7.9% of the surface but constitute only a small fraction (around 5-8%) of the total crustal volume. Option B aligns with common textbook figures for igneous (~64.7%), metamorphic (~27.4%), and sedimentary (~7.9%) rock distribution in the crust.