Pet foods should be treated carefully to prevent contamination
the article discusses lots of ways you can avoid contamination
Answer:
What passage?... Where is it?
Explanation:
O-O
the answer is that because its a pronoun that connects a phrase
Answer:
It is either A or C. But I do not know which one it is.
I think it could be A. But I would wait until someone else answers first just in case I am wrong.
I am sorry if I am wrong.