In addition to keeping people safe, workers in the law, public safety, and security career cluster also a) create new regulations for how to respond to emergencies, investigate crimes, and behave during courtroom proceedings. b) design vehicles for responding to emergencies, tools for investigating crimes, and guns for keeping them safe during courtroom proceedings. c) teach people methods for responding to emergencies, investigating crimes, and representing themselves in courtroom proceedings. d) people by responding to emergencies, investigating crimes, and representing the public in courtroom proceedings.