Respuesta :
An element is the most basic blocks of building the earth. Elements are actually atoms, which are made of particles known as neutrons, protons, and electrons.
I am unsure if this is correct (especially since I'm very late), but here are the possible answer choices to this question:
O a pure substance
O a type of a mixture
O a pure compound
O an impure substance
The answer to this is a pure substance (1st option).