The most abundant metal found in earth crust

The most abundant metal found in earth crust
A: Oxygen
B: Aluminium
C: Iron
D: Silicon

Aluminium is the most abundant metal in Earth's crust at about 8.1 percent. Oxygen and silicon are non-metals iron is less at 5 percent. Aluminium is used in construction and packaging due to its lightness and resistance to corrosion. Mining and extraction involve bauxite ore. This fact is key for geology and materials science highlighting resource distribution and industrial applications in modern technology.