Inhibiting the expression of which protein will most likely alter cell size (the amount of water inside a cell) at its final state?

The sodium-potassium pump (Na⁺/K⁺-ATPase) maintains the osmotic balance of the cell by regulating ion gradients—exporting Na⁺ and importing K⁺. This ionic balance controls the movement of water across the plasma membrane via osmosis, thereby determining cell volume at its resting or final state. In contrast, aquaporins mainly regulate the rate of water flow, not the steady-state cell size.