The answer is D.
There is no single topic sentence within this piece of writing. A topic sentence is used to summarize what is going to be, or what has been written about, and there is no such sentence within this piece.
A coma will separate her actions, so B is correct. Hope this helps :)
Nor is correlating conjunction im pretty sure
Answer: D because one can argue that there are serious dangers to carbon-dioxide.
Answer:
The answer is A.
Students often fail to take advantage of the educational opportunities they are given.
Explanation:
Students often fail to take advantage of the educational opportunities they are given.
