Final answer:
Brad's email to his boss is an example of professional communication, characterized by its formal tone and clear language aimed at conveying a message in a work environment.
Step-by-step explanation:
Brad's email to his boss requesting permission to attend a training seminar in Houston is an example of professional communication. Professional communication involves sharing information, thoughts, or messages in a work environment, often to coordinate activities, relay work-related information, or obtain approvals for various tasks or events.
This type of communication can take many forms, including emails, memos, reports, and face-to-face meetings. It is characterized by a formal tone, structured format, and clear, concise language aimed at effectively conveying the message within a professional setting. In Brad's case, sending an email is a direct and formally documented way to make a request, demonstrating the importance of written communication in the workplace.