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Could you please provide more context or clarify what you mean by "Brilliance Answer Key" and "Mail Guards"? Are they related to a specific test, exam, or assessment? Are they related to a particular industry or field?

Additionally, what type of answer key are you looking for? Are you looking for a key to a specific question or set of questions? Are you looking for a key to a particular type of question, such as multiple-choice or true/false?

Once I have more information, I'll do my best to provide a helpful answer.