When Kimmy Summers Had to Communicate with Other Students to Recruit

When Kimmy Summers had to communicate with other students to recruit volunteers at their respective universities to help freshmen during campus move-in day,they chose to use

A) letters from their colleges' deans of students.
B) flyers slid under dorm-room doors.
C) phone solicitations.
D) ads in their campus newspapers.
E) social media.