A) inductive is the correct answer
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
Answer: Vanity
Explanation: Vanity is excessive pride in one’s achievements and / or appearance. In the passage, the protagonist grew more in love with herself and her pride is described as darkening, which means it became something negative. Vanity is considered negative while self-love and self-admiration are positive when you experience them in healthy amounts.