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.
Answer:D
Explanation:
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The answer would be C. It’s giving the narrators reflective thoughts from the past.
Answer:
It will help them in the long run for other people will be able to read it and they will be able to put more words per line of a piece of paper
Explanation: