Digestive System, Stomach, Stomach Lining, Epithelial Stomach Cells.
Pretty sure unless its reverse.
The choices can be found elsewhere and as follows:
<span>Osmosis
Active Transport
Passive Transport
Facilitated Diffusion
I think the correct answer is the second option. The process that would be necessary is active transport. </span><span>Transport of materials against the concentration gradient requires energy which is active transport.</span>