I think the answer is B. I hope it helps! :)
After reading excerpt represented above I can clearly see the right answer from the scale attached above. Definitely, this paragraph uses standart compare-contrast organization, so now it is clear that the only correct option is the first one A. Comparison and contrast; cause and effect. Especially such words<span> as "however" and "on the other hand" are the prompts for you to understand why I think so.</span>
Answer:
The Answer is the bottom definition: Not clean or pure.
Explanation:
The prefix im- has a negative meaning, so impure means not pure.
