Which of the following is NOT a part of programmed instruction?

Programmed instruction is a method of self-teaching that provides learners with a systematic approach to acquire knowledge through a series of controlled steps. It typically includes four essential components: instruction, response, feedback, and reinforcement.

The component of 'instruction' provides the necessary content or concepts that the learner needs to engage with. 'Response' involves the learner actively participating by answering questions or making decisions based on the instruction provided. Feedback is crucial as it informs the learner about their performance, correcting mistakes and reinforcing learning.

While 'comment' may seem relevant, it does not specifically fit within the core components of programmed instruction, as the structure focuses more on explicit feedback designed to guide the learner's understanding and improvement. Therefore, identifying 'comment' as not being part of programmed instruction aligns with its fundamental components, underscoring its absence in the instructional design model.