Q. Arrange the following steps of hand washing in order
1. wash palm and fingers
2. wash fingers and knuckles
3. wash thumbs
4. wash back of hands

options
(a) 1, 2, 3 and 4
(b) 1, 4, 2 and 3
(c) 4, 3, 2 and 1
(d) 2, 3, 1 and 4