Macbeth kills all of the following except?a. lady macduff and her son b. king duncan c. fleance d. Banquo

To be exact, Macbeth only kills Duncan with his own hands.  He has 3 murderers kill Banquo for him and the entire Macduff family (except for Macduff himself) are murdered in their castle in Act IV.  However, for the sake of your question, the answer would be "C."  Fleance is the only one of those answers who gets away.