Which of the following are good reasons to learn self-defense and practice it regularly? a. it's good to learn self-defense if a parent gets physically out of control. b. it's good to learn self-defense if a person in the neighborhood bullies other people often. c. it's good to learn self-defense if a next-door neighbor abuses his wife and others. d. all of the above select the best answer from the choices provided. a b c d