Final answer:
The most efficient form of cell transport for moving substances quickly into or out of cells is active transport, particularly vesicle transport, using energy from ATP.
Step-by-step explanation:
The type of cell transport that would be best to move substances into or out of the cell quickly is active transport. One form of active transport is vesicle transport, especially in cases of large molecules like proteins that cannot pass through the plasma membrane on their own. Active transport mechanisms generally require the use of the cell's energy source, adenosine triphosphate (ATP).Vesicle transport can be further categorized into two types: endocytosis and exocytosis. Endocytosis is used to engulf materials and bring them into the cell, whereas exocytosis is employed to release substances out of the cell. Both processes are efficient and quick in moving substances, especially when they need to be transported against a concentration gradient or are too large to pass through the cell membrane.