I would say its because Saturn is so far away from the Sun and when it orbits the Sun its like 9.5 NU
I think the correct answer from the choices listed above is option A.
The first type of cell to differentiate is a neuron. The neurons are
cells that process and transmits information through electrical and
chemical signals. Hope this answers the question.

Cellular homeostasis involves maintaining a balance of several factors that make a cell healthy. The cell membrane is a lipid bilayer that prevents that passage of water and ions. This allows cells to maintain a higher concentration of sodium ions out the outside of the cell.