Which function best helps a cell maintain a small surface area-to-volume ratio?

Which function best helps a cell maintain a small surface area-to-volume ratio? a.Water Usage b.Protein Synthesis c.Organelle Complexity d.Signal Response from the Nucleus e.Cell membrane protein receptors I know why cells are small, I just can't seem to figure out which of these functions helps that, although I do not believe it is a or d