I am pretty confident that the answer is D) mouthpieces for breathing. This is the only way they can stay underwater for long periods of time. If they came up every 10 seconds for breath, they would waste a lot of time.
I hope I helped you!
The disease is called Scleroderma
I'm pretty sure the answer to this question is choice D.
For every 25 pounds a person is overweight, they should consume "8 Ounces" <span>more water than average.
Hope this helps!</span>
