The contact information is the only optional part on an email
Hope this helps
Answer:
Does the writing have a clear sense of purpose? *Is my paper's main idea, or thesis, clearly stated early on (within the first paragraph, ideally)? *Could I organize my ideas more logically (within a paragraph or among paragraphs)?
Explanation:
This is true. If there is factual evidence to support your topic, then it is a legitimate source.
B is the answer! I hope I helped! :)