Based on the stanza (which I believe is the entire paragraph displayed above the question), we can immediately disqualify A. as a choice, as there is not a lot of references to "listening to loud noises". We can also eliminate D. as there is no mention of a shared need to move and travel. This leaves us with two options: B and C. From here, I think both could work, but what led me to believe that B is the correct option is because there is always some sort of work that is being talked about in the paragraph. "clean tables, read ledgers, or save lives-to teach geometry, or ring up groceries as my mother did". I believe the line I just quoted really demonstrates how B is the right answer. Please let me know if I misunderstood and I hope I helped!
I would have to say the answer is c. Just a guess though. I personally would be more formal when writing a cover letter and it does need to be proofread. <span />
