Correct option is C
The correct answer is develop the skill of peer correction. By asking learners to exchange workbooks and review each other's work, the teacher encourages the development of peer correction skills. This activity not only helps students understand their own common mistakes by observing others' errors but also fosters critical thinking and constructive feedback skills. It engages students in a form of collaborative learning where they can learn from peers and gain insights into different ways of approaching problems or tasks, enhancing their overall understanding and application of the subject matter.