NOTE: In Exercises 6.8–6.21, pay close attention to what you are being asked to do, and do only as much revising as is necessary. Take special care to preserve the meaning of the original material. If necessary, invent reasonable details.

8. Refer to the advice at the beginning of “Structuring Effective Sentences,” and rewrite the following sentence in the form of a list.

The causes of burnout can be studied from three perspectives: physiological—the roles of sleep, diet, and physical fatigue; psychological—the roles of guilt, fear, jealousy, and frustration; and environmental—the role of physical surroundings at home and at work.