Active transport occurs in cells for example when the Na-k pump is at work any process that involves active transport most often involves the

Active transport occurs in cells, for example, when the Na-K pump is at work. Any process that involves active transport most often involves the A) movement of molecules without any predictable pattern. B) movement of molecules from a lower concentration to a higher concentration.

..I hope it's help

maybe because its impossible for balloons to lift a whole entire house.