According to Bernoulli's principle, which statement is correct?

Bernoulli's principle describes the relationship between the pressure, velocity, and elevation in a moving fluid. According to this principle, an increase in the velocity of a fluid results in a decrease in pressure. This is a fundamental concept in fluid dynamics and is crucial for understanding how various systems, such as wings and propellers, generate lift and how fluid flows through pipes.

In the context of the question, the correct statement is that the pressure of a fluid decreases where the velocity increases. This relationship indicates that as fluid flows faster, the energy associated with that fluid's pressure must decrease, which is balanced by an increase in kinetic energy (due to the increase in velocity).

The principle can be simply illustrated with the example of air flowing over an aircraft wing; as the air moves faster over the wing, the pressure above the wing decreases, contributing to lift. This dynamic reinforces the correct answer, as it illustrates how high-velocity flow regions correlate to lower pressure.