Answer:
Answer: A. Exclamation points
Step-by-step explanation:
Explanation: When writing a formal or professional text, we need to be the as objective as possible, this applies to the subject, the opinions we gave, the sources we use, and even the language and punctuation that we use. Typically we shouldn't use exclamation points when writing a formal text, because they usually express a lot of emotion which isn't appropriate for a formal or professional writing.