Zirconium cannot be broken down by a chemical change, because it is an element. The others are all molecules.
The wrong answers for sure are B and D, I assume the answer is C
Answer:
Here's what I've found
Explanation:
Refer to the attachment !
It all depends what theory it is most are supported by really good evidence but they just don't have all the evidence so it can't be proven a fact at that time