Ideally, instructors should learn to recognize the behaviors of individuals who will need additional assistance:

Instructors should ideally learn to recognize the behaviors of individuals who will need additional assistance before a class session is disrupted. This proactive approach allows them to anticipate challenges and implement strategies to support those students, ensuring a more positive and effective learning environment for everyone involved. By identifying potential issues early, instructors can provide individualized support or adjust their teaching methods accordingly, which helps maintain the flow of the class and minimizes disruptions.

The other choices, while they may have their merits, suggest a reactive rather than proactive approach. For instance, observing students during group work might just lead to intervention after issues have already started, and relying on enrollment data may not provide timely insight into students' current needs. Similarly, waiting for other students to point out issues can create an atmosphere where some learners might struggle unnecessarily or feel discouraged before receiving help. Therefore, recognizing the need for support before disruption occurs is the most effective practice for ensuring that all students have the opportunity to succeed.