Why do porters place a round piece of cloth on their heads when they have to carry heavy loads?
1. To reduce the pressure on their head.
2. To increase the pressure on their head.
3. To decrease the weight on their head.
Select the correct answer using the code given below.
1
1 and 2 only
2
2 and 3 only
3
1 only
4
1, 2, and 3