Answer:
D. 1 atm
Step-by-step explanation:
We have been given a graph that shows the relationship between pressure, p, in atms, and depth, d, in ft.
Since d represents depth, so at the sea level depth will be 0 feet.
Now let us see our graph to find the value of y at x equals 0.
We can see that at x equals 0, y is at 1. Therefore, the water pressure at sea level is 1 atm and option D is the correct choice.