Choice D is the best answer. In (lines 77-82"knocked... governess"), the narrator provides evidence that Mrs. Quabarl appears imposing, or autocratic, but is easily defied, or opposed: "She was one of those imperfectly self-assured individuals who are magnificent and autocratic as long as they are not seriously opposed. The least show of unexpected resistance goes a long way towards rendering them cowed and apologetic."
Choices A, B, and C do not provide the best evidence that Mrs. Quabarl appears imposing but is easily defied. Choices A and B are incorrect because they present Mrs. Quabarl's opinions on railway companies and educa-tion, and choice C is incorrect because it focuses on Lady Carlotta, not Mrs. Quabarl.