Final answer:
No, it is not true that a security guard is required to advise a person of why they are under arrest only if they speak English; they must inform the person of their rights regardless of language.
Step-by-step explanation:
Under the Charter of Rights and Freedoms, a security guard or any individual making a lawful arrest is required to inform the person being arrested of the reasons for their arrest, as well as their rights, regardless of the language they speak. Law enforcement officers must provide the suspect with a Miranda Warning, which includes informing them of their right to remain silent, the right to legal counsel, and that anything they say can be used against them in court. It is not true that they are only required to advise a person of these rights if they speak English; these requirements apply regardless of the language spoken by the individual being arrested.