Final answer:
The correct answer is B) Use abbreviations such as "u," "r," and "BRB" to keep the e-mail message shorter.
Step-by-step explanation:
The correct answer is B) Use abbreviations such as "u," "r," and "BRB" to keep the e-mail message shorter. It is important to use proper spelling, grammar, and punctuation in professional emails. Using abbreviations and text language can make your message appear unprofessional and can be confusing for the recipient. It is best to communicate clearly and concisely without relying on abbreviations.