Question

cells are small for all of the following reasons except *
transport materials within the cell easily
need to move materials in and out of the cell easily
small cells fit better into the world than large cells

Explanation:

Cells are small because a high surface - area - to - volume ratio helps in efficient transport of materials in and out, and small size allows for better movement of materials within the cell. The fact that small cells fit better into the world is not a fundamental biological reason for their small size compared to the transport - related reasons.

Answer:

Small cells fit better into the world than large cells