Assertion (A) is correct: Audio-visual aids (e.g., videos, slides, charts) enhance teaching by making concepts more engaging and accessible, but they cannot replace the teacher’s role in facilitating discussions, adapting to learner needs, and providing personalized guidance. Teachers bring critical human elements like motivation, empathy, and real-time interaction that audio-visual aids lack. Reason (R) is incorrect: While audio-visual aids are valuable in teaching, they are not designed to substitute or replace the teacher, as R suggests. The reason contradicts the assertion by implying that aids can fully take over the teacher’s role, which is not feasible in effective learning environments. Thus, option (2) is correct, as (A) is true, but (R) is false.