Question

Why do whales and dolphins often come upto the water surface?
A) To swim B) To get sufficient sunlight C) To breathe D) To get food

Answer 1

they both come out to get breathe

Answer 2

To breathe. ......
Explanation....
Actually whales and dolphins are not fishes they are mammals which have lungs for respiration.
So they come out of water to take atmospheric oxygen.