Using context clues, we can determine that the best answer is B, nature. In the sentence, they are describing who Emma Woodhouse is overall. With this in mind, as we look over the choices we can see that A isn't a good choice because they aren't discussing property. The same can be said for C and D as well as there are no hints towards arrangements or events. However, when we consider nature, if we consider the definition that refers to someone's personality, it fits for the sentence we are given.