The correct answer is B - the writer's identity.
Imagine if you received a letter, and you start reading it, but you have no idea who is it from! It would be confusing. The day, who you are, and your information will be located at the top of the letter, then include the name and information of the person receiving, in the same format.
Example:
(Insert your name)
123 ABC St.
New York City, NY 99999
April 1st, 2017
Dr. Patricia Brown
777 West Ave.
Los Angeles, CA 111111
Dear, Dr. Patricia Brown,
(Purpose for writing goes here)
(An expression of thanks)
Sincerely,
(Insert your name)
this isn't an answer but the subject isn't really english
Answer: When you figure out the main idea, you can then see how the author addresses it. If they have a bias opinion against, or for it, you can note their ton when the speak about it. Knowing the main idea, can help show why the author is writing about it, and how they feel about it as well.
Explanation: Hope it helps :)
