When comparing the man's legs to rubber in context, it sounds like he is unable to walk. Describing his legs as rubber would indicate they bent and bowed under his weight on them. He's probably either injured or lame.
Our world would be different because without the printing press we would have no books, so school would be different and probably more difficult. Without the printing press we never would have printed bibles so church and any religious studies would be different (and probably more difficult) AND of course we would have no newspapers so there would be less advertising, and nothing to read on Sunday morning.
I would say the answer is a
I had the same question, it took me a while to figure it out, but the answer is B