A) Although Alcott worked hard to make money, she still made time to write.
I would say that A is the correct answer, since the first paragraph ends with a sentence about how Alcott worked to make money, and the second paragraph starts with a sentence about a book she had written.
Science is behind many things. For example, enhancement in technology. This has a significant role in developing a better fundamental society. Well personally, I think its just making us more lazy. Science allows us to explore different things. New things are found every year, and with that, somehow we turn it into our advantage. I'm not going to go into detail, i'm afraid you'll have to do the thinking from here. I think its a good head-start tho.
If you have any doubts or questions, regarding my response, please say so. I hope I helped. Chur!