Final answer:
Anne's vacation request to her boss is a form of formal communication that requires clarity, politeness, and adherence to professional standards such as including a subject line and timeframe, and showing appreciation and commitment to work responsibilities.
Step-by-step explanation:
When Anne submits her vacation request to her boss, this action represents a form of formal communication within a professional environment. Such communication is expected to be clear, polite, and should adhere to company protocols. Key components of formal communication when requesting time off would typically include a subject line in the email to indicate the purpose of the message, a salutation to professionally address the recipient, and an expression of gratitude for the recipient's time and consideration. Additionally, it is important for Anne to provide a timeframe for the requested vacation and assure her boss of her commitment to her responsibilities.