"Their" is correct, because it shows possession of the desk by someone else.
Answer:
b. we pay more taxes then we realize.
(makes the most sense)
Well, you didn’t place Paragraph 4 into the question, but here’s what you do.
Find paragraph 4 (four indented bodies of word down) and find the adjective or noun that describes that this part of London is about money.
Hope this helps!
It's a visualization, because a person used his/her imaginations to relax