Correct option is C
Ans. (c) Sol. The purposes of audiovisual aids include:
1. To simplify difficult concepts: Visual and auditory aids help in breaking down complex topics.
2. To bring about understanding where words fail: Aided media often help explain concepts more effectively than verbal explanation alone.
3. To reinforce learning appealing to more than one sense: Audiovisual aids appeal to both auditory and visual senses, reinforcing learning.
4. To promote monotony: This is incorrect. Audiovisual aids are used to avoid monotony and keep the learners engaged.
Ans. (b) Code: