Question

The definition of an incompressible fluid is

Select one:
a. A fluid with a constant density at all pressures
b. A fluid with no viscosity
c. A fluid with a constant pressure
d. A fluid with viscosity

Answer 1

well, if it's incompressible, then its volume doesn't change under pressure, right?

SO, since the mass also doesn't change, that must mean that the answer is

(A), since density = mass/volume, both of which are constant.