The correct answer is: A. Mishap : Catastrophe
A misdemeanor is a less serious crime than a felony. A mishap is a minor accident, while a catastrophe is a major disaster. Both misdemeanors and mishaps are relatively minor, while felonies and catastrophes are relatively serious.
Option B is incorrect because a crime is not necessarily a felony. A crime can be a misdemeanor or a felony.
Option C is incorrect because a thief is not necessarily a burglar. A thief is someone who steals, while a burglar is someone who breaks into a building to steal.
Option D is incorrect because the police do not necessarily send people to prison. The police may arrest someone, but it is up to the courts to decide whether to send someone to prison.