What is the correct order of Earth's layers is?

The correct order of Earth's layers, from the outermost to the innermost, is the crust, the mantle, the outer core, and the inner core. The crust is a thin, solid layer where we live, followed by the mantle, which is semi-solid and makes up the majority of Earth's volume. Below the mantle lies the outer core, a liquid layer composed mainly of iron and nickel, and finally, the inner core, which is solid and extremely hot, also primarily made of iron and nickel.