What’s the answer please please?

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

your answer would be a, maximum exploitation of resources.

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101