Vital could mean something that is important or essential.
For example: the lungs and heart are both vital organs in the human body.
Expository writing is used to convey factual information (as opposed to creative writing, such as fiction). It is the language of learning and understanding the world around us. If you've ever read an encyclopedia entry, a how-to article on a website, or a chapter in a textbook, then you've encountered examples of expository writing
So a or d but i'm leaning toward d
Love makes people do crazy things
Each stanza contains 3 lines :)
