What are the three main purpose for which author’s write?
a. to give information, provide humor, and to cause tears
b. to argue, to give information and to provide entertainment
c. to entertain, argue and provide humor

B. To argue, give information, and provide entertainment

Explanation:

There are many reasons behind an author's writing. However, the main ones general involve the act of persuading and expressing her/his opinions to support an idea or, in other words, to argue about a specific subject.

Moreover, the author wants to provide information to the reader and, at the same time, the reader wants to have access to a piece of writing because she/he wants to be informed with facts and backed-up evidence. This goes especially to descriptive and non-fiction books and articles.

Finally, an author wants to entertain. This goes to all genres but especially to fictional books or articles which should provide entertaining and creative content, which hooks the reader and motivates her/him to continue reading and finish the piece of writing.

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