An appropriate summary for the article "A Most Troublesome Element" is the last option - C. Arsenic is a naturally occurring, poisonous element that has threatened the health of humans since the Middle Ages.
It clearly states what the whole article is about.
c, roofs as the other answers are not correct
Answer: the answer is B hope it helps
Explanation:
Hi sorry but who is T,J and what d you mean, please explain this
