Final answer:
The appropriate email style for a business letter to a manager at another facility is to run spell-check and review the tone of the letter to avoid misunderstanding.
Step-by-step explanation:
When writing a business letter to a manager at another facility, the appropriate email style is D) Running spell-check and reviewing the tone of the letter to avoid misunderstanding.
Using several different font colors (option A) can be distracting and unprofessional. Using all capital letters (option B) is considered shouting and can be seen as rude. Inserting a funny cartoon (option C) may not be appropriate in a business setting and can undermine the professionalism of the email.
It is important to use proper grammar, punctuation, and capitalization in the email. Sentences should be well-written and short. Avoid using all capital letters as it can imply shouting. Proofread the email for clarity and tone to ensure the message is understood without confusion.