As an object in motion speeds up or "becomes heavier", its kinetic energy increases proportionally: double the velocity and you quadruple the kinetic energy. This is why a tiny bullet traveling at high speed does so much more damage than a huge truck bumping into something at 1 mph.
Answer: Choice C
I’m a little bit in a rush, so i’ll try answering a few.
NaCl - binary
CuSO4 - polyatomic
CaCO3 - polyatomic
LiF - binary
KOH - polyatomic (not 100% sure)
Na3(PO4)2 - polyatomic (not 100% sure)
CsOH - polyatomic (not 100% sure)
hopefully someone else sees this and corrects me :)
Plants or you can say grass both are producers