The answer is: 1. simple list
A simple list organization essay involves a written account in which the order of the items are unimportant.
The rest of the choices are incorrect because a compare-and-contrast order essay explains the similarities and differences between at least two things; an order of importance structure deals with the most significant features to the least influential ones or vice versa; and a chronological order configuration begins with the earliest events and follows the order in which they occurred.
