If you know things about your topic you will have a biased opinion on it. You can check the validity of the topic by reading up on what you already know to make sure that it is correct and it is not a biased opinion.
C- The proper use of a citation format such as MLA can help you avoid plagiarism. Parenthetical citations within the text of your paper let your reader know when you've used information from another source. The parenthetical citation corresponds to a source listed on your works cited page.
That if you are speaking to someone through message or email or any written message it has no tone. You may say something with good intentions & someone may take it the wrong way.