Which of the following is a disadvantage of Incidental Teaching?

The correct choice highlights a notable challenge of Incidental Teaching, which is the requirement for the teacher to remain hypervigilant. This approach relies heavily on the teacher's ability to recognize and seize spontaneous opportunities for teaching and reinforcing communication skills as they arise in natural settings. Because the method capitalizes on unplanned incidents, the educator must be attentive and ready to engage with students effectively at any moment.

This constant state of alertness can be demanding and may lead to teacher fatigue or decreased effectiveness if they are unable to maintain that level of attentiveness during interactive teaching opportunities. Therefore, while Incidental Teaching promotes naturalistic learning and can be beneficial for learners, the intense vigilance required can pose a significant drawback for educators implementing this method.