Text stimulus (diagram): Network diagram titled "School-Based Support Network." Locations: Student at center. Connections: Student to Counselor, Robotics Club, Debate Coach, Peer Study Group, and Alumni Mentor. Connections: Counselor to Scholarship Information Session and Course Planning. Connections: Alumni Mentor to Career Q&A. Display details: arrows or lines with labels: advice, practice, information, encouragement. Which concept is best illustrated by the connections among students, mentors, clubs, and information sessions?