The second point in the paragraph about children provides more support for the overall topic: noise pollution. because it's offering more evidence that noise pollution is an issue, "furthermore" is your best choice as a transition. "for instance" would suggest that you're giving an example of something, as in a specific case in which a child's education suffered. "however" suggests a shift, usually describing an exception, and the point of the children's education is not an exception--it's further evidence. "consequently" suggests that you'd carry on to tell the reader about an effect of a circumstance.
Gloomy. The way which the character describes his cell makes it seem like a dark and gloomy place. He said they gave him a blanket and a toilet and thats it, the bars are rusty, the cell was crumbled. The guard even smiled at him as if he was enjoying putting him in there.
Hope this helped. Have a great day!
The answer is B. :/ hope ur happy