In the following excerpt, what method does the writer use to introduce the essay?
Attendance at Chelsea High School had hovered at a disappointing 90 percent for years, and school officials were determined to
turn things around. So. last fall they decided to give students in this poverty-stung city just north of Boston a little extra
motivation: students would get $25 for every quarter they had perfect attendance and another S25 if they managed perfect
attendance all year. Chelsea High is not the only school trying to improve attendance with incentives for students.