Answer: C) She is more honest.
Why would this be the best answer?
In the story, Strong Wind said he would marry whomever could see him. (Note: he had powers to go invisible) This was an honesty test that all of the women in town (Including Cinderella´s sisters) failed. Exept Cinderella herself! When she was asked if she could see Strong Wind she replied honestly, ´´No.´´