Which of the following is the least important aspect of the teacher's role in the guidance of learning?

Developing the learner's insight to overcome pitfalls and obstacles is the least central of the listed guidance roles, since learners largely build it through their own effort.

Insight into what constitutes adequate performance (B) is important because learners need clear standards to aim at.

Encouragement and moral support (C) is a key affective duty that sustains motivation.

Continuous diagnostic and remedial help (D) is central, locating errors and correcting them in time.

Guidance of learning chiefly means setting standards, motivating and remedying, more than removing every obstacle for the learner.

Diagnostic and remedial teaching rests on formative evaluation that feeds back into instruction.