The correct options are:
the thinnest layer
-The crust is at most 60km while the other parts such as mantle can get to 2900km.
made of large pieces called plates
-The crust is indeed formed by different plates, including continental and oceanic, where they move according to the convection current of magma
mostly made of silicon dioxide
- The crust is made up of 59% of silica dioxide.
the outermost layer of the earth
- This is correct.
Hope it helps!
