What type of events are specifically exempt from the tryout classification under NCAA rules?

The correct answer identifies open events held on campus as exempt from the tryout classification under NCAA rules. This exemption exists because open events typically allow any interested participants to join, rather than restricting attendance to specific invitees. This inclusivity aligns with the NCAA's commitment to promoting access and fairness in student-athlete participation. In an open event scenario, the atmosphere fosters a broader competitive experience where athletes can showcase their abilities without the limitations that characterize formal tryouts.

Closed scrimmages and high-stakes tournaments would generally fall under more controlled conditions that may necessitate official tryout classifications to ensure compliance with NCAA regulations. Meanwhile, training camps could also involve selected participants, often based on previous performance or compatibility with team needs, which does not align with the concept of an open event. Thus, the status of open events as exempt acknowledges their nature of being accessible to all interested student-athletes, expanding opportunities for participation and evaluation.