What is the relative abundance of igneous, metamorphic and sedimentary rocks in the Earth’s crust?

1. A Option A: 7.9% - 27.7% - 64.4%
2. B Option B: 12.5% - 12.5% - 75%
3. C Option C: Neither A nor B
4. D Option D: 64.7% - 27.4% - 7.9%

Answer checked 11 October 2026 · How we write and check questions