Answer: The meaning of the underlined word ("incarcerated") is A. locked up in jail or prison.
Step-by-step explanation: The word "incarcerated" is used to refer to someone that has been put in prison due to a crime that he/she has or might have committed. In other words, "incarcerated" indicates that someone has been locked up in jail as a form of punishment. Therefore, the correct answer is A. locked up in jail or prison. The words in the sentence that help the reader to infer this meaning are "murderers" and "robbers".