Answer:
Indeed, diamond is the hardest material in the world. Material hardness is a property determined by scratch resistance.
Explanation:
A substance can only be scratched by something of equal or greater hardness. Therefore, only a diamond can scratch another diamond. Hope this helps! :)
Answer:
It should be C. "Halt!" Sorry if I'm wrong though.
Explanation:
im not 100% sure but im pretty sure 1. d and 2. a
i hope its right, but im pretty sure it is
