Which of the following are the purposes of audiovisual aids?
1. To simplify unfamiliar concepts
2. To bring about understanding where words fail
3. To reinforce learning appealing to more than one sense
4. To promote monotony
Select the correct answer using the code given below:
1
1 and 2 only
2
1 and 4
3
1, 2 and 3
4
2, 3 and 4