Answer:
A. Title of an essay.
Explanation:
The title of an essay should have quotation marks because it is a small piece of work, such as a poem, a song or an article.
On the other hand, the title of a book (or a novel), a magazine or a play use italics because they are larger pieces of work.
For example:
"Ode to a Grecian Urn" by John Keats (a poem)
Kindred by Octavia E. Butler (a novel)
