The third answer is your best choice.
I believe it would be -ous.
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.
The correct answer is C. <span>the audience knows something the character or characters don't.
This is a fairly common element in plays and has been used as far back as ancient Greece.</span>