I think the answer to this question is D To Kill a Mockingbird is the best book because the theme of injustice is still current.
What is this referring to? I'm confused
Explanation:
The lines quoted in question are taken from "Importance of Being Earnest"
The essence is that the writer is criticizing the action of people especially women for their behavior in public. He has done that in metaphorical way and quoting the practice of women doing flirt with husbands on public places during Victorian Era. He said that just like there is no need of washing a white cloth similarly women don’t need to flirt with those , whom they already love