Answer:
The correct answer to the following question will be option A. Professional Etiquette.
Step-by-step explanation:
Professional etiquette:
It is an unwritten code of conduct surrounding members ' relationships in a business environment. Using the right professional mark, everybody involved will feel more comfortable and things fluid. Many areas of an individual's working life, like e-mail, telephone calls and business meetings, have professional etiquette applicable.
The other three options are not suitable for the example of the above statement as they are not able to perform some expected tasks.
Hence, Professional etiquette is the right answer.