The correct answer is B. maintaining outward show.
Keeping up appearances means to maintain a certain image or standard of living, even when one’s circumstances may not allow it. It can be seen as a way of preserving one’s dignity or self-respect, or of avoiding embarrassment or shame.
In the case of Ravi, he is poor but he still believes in keeping up appearances. This means that he tries to dress and act in a way that does not make it obvious that he is poor. He may do this because he wants to be respected, or because he does not want to be pitied.
The other options are incorrect because they do not accurately describe what it means to keep up appearances. Option A, showing indifference, means not caring about something. Option C, showing good manners, means behaving in a polite and respectful way. Option D, revealing the truth, means telling the truth, even if it is difficult or embarrassing.