Answer
Choice D.
Work Step by Step
Water is essentially incompressible. The speed of the water depends on the pipe’s diameter, as shown by the continuity equation (10-4).
Bernoulli’s equation (10-5) shows us that the water pressure depends upon the speed, and also upon the change in elevation.
We know that the height increases, but without more information about how the diameter changes and affects the water speed, we cannot predict what happens to the water pressure.
