Final answer:
If a security guard is rude to the public, they could be violating the PSISIA code of conduct, specific to ethical standards expected of security personnel, not typically the Police Act, Human Rights Code, or Criminal Code.
Step-by-step explanation:
If a security guard is rude to a member of the public, they may be in violation of the PSISIA code of conduct, which stands for Private Security and Investigative Services Act. This code of conduct outlines the professional and ethical standards expected of security guards while on duty. It doesn't constitute a violation of the Police Act, as security guards are not police officers; nor does it generally breach the Human Rights Code unless the rudeness amounts to discrimination or harassment based on prohibited grounds. Rudeness on its own does not typically rise to the level of a Criminal Code violation unless it encompasses criminal behavior such as uttering threats or assaulting someone.