The answer is B. Because the author wants to make it the situation clear that it is getting very serious.
I'm not the greatest at grammar, but I think the very first one is incorrect. It should just be a comma, then the second just a comma as well, but the last one is correct. (I have no idea, I am sorry if you get it wrong.)
Answer:
(C) Higher reading levels lead to increased opportunities.
Explanation:
As it turns out, reading can actually help improve empathy. When people read stories about other people's lives, it helps them develop the skills to understand the world through another person's perspective.
B is the correct answer for this one
