If lifeguard sitting outside a swimming pool observes a boy drowning in water, hastravel with maximum possible speeds in air and water to reach the boy in shortest time

If lifeguard sitting outside a swimming pool observes a boy drowning i

1.	If lifeguard sitting outside a swimming pool observes a boy drowning in water, hastravel with maximum possible speeds in air and water to reach the boy in shortest time
Answer» along strongest path from his initial position parallel to bank of the pool on GROUND and normal to it to reach the boy along the path FOLLOWED by a REFRACTED light ray from his PORTION to the boy along any path of his choice Answer :C