C) so then. saying that shows that the effect is about to show
Go with the flow. Don't worry about it and hope will bring you to the destination.
D. They emphasize the idea that bicycles helped blur the gender roles.
Wheels of change is a book about how women started using bycicles to do several things, like working, or for fun, or to protest about injustices, by posing with a stache, and a man´s suit, Frances Benjamin sends a message that she could too do everything a man could do, including riding a bycicle.
I’m going to try to give this to you via comment section because it includes too many words.
(Now, this is something I pulled off the web. You could turn this in, but I don’t recommend that. Just read over this instead of the actual book if you don’t have enough time, and rewrite some of it in your own words, or rewrite it all yourself based on this.)