Final answer:
The type of formal communication in this situation is an email.
Step-by-step explanation:
The type of formal communication in this situation is an email.
Emails are widely used in professional settings for written communication. They provide a formal and documented way of conveying messages, requests, and information in a quick and efficient manner.
In this case, Suzie is sending an email to her coworker, requesting that they cover her shift. By using email, Suzie can clearly explain her request, provide any necessary details, and formally ask for her coworker's assistance. Email allows for a written record of the communication and helps ensure clarity and professionalism in the request.