Review the expository writing prompt below.

Write an expository essay that informs your audience about a significant problem you aspire to solve when you grow up. Describe the problem in detail, its causes and effects, and explain two potential solutions for positive change. Support your ideas with well-researched evidence. Your expository essay must be based on this prompt and topic, and it must incorporate ideas and information found in at least three researched sources.
Use your best writing to complete an essay that

is focused on a central idea;
combines evidence from three credible sources with your own elaboration to develop your ideas;
is organized and includes transitions within and among ideas;
provides citations for quoted material and source ideas; and
demonstrates correct use of grammar and language appropriate to the task.

Which of the following is not a requirement for this expository essay?
Focus on a central idea
Use transitions within and among ideas
Demonstrate correct use of grammar and language
Do not provide citations for information from outside sources

The fourth option, "Do not provide citations for information from outside sources," is not a requirement for this expository essay. It explicitly states that the essay must incorporate ideas and information found in at least three researched sources and provide citations for quoted material and source ideas. Providing citations for outside sources is essential in academic writing to give credit to the original authors and to demonstrate the credibility of the information presented.