One of the consequences in continuing to operate a centrifugal bilge pump with the discharge valve closed, is that the __________.

Correct Answer: Option D — pump will overheat

Centrifugal pumps rely on the discharge flow to dissipate heat generated by the impeller's friction against the fluid. When the discharge valve is closed, the fluid inside the casing recirculates, absorbing energy until it reaches a boiling point, which can damage internal seals, bearings, and the pump casing itself.