The health caregiver is administering a hypotonic ( having a lower osmotic pressure than a particular fluid), intravenous solution to a client. Which mechanism of membrane transport mostly underlies this action?

Osmosis

Explanation: Osmosis is the process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.

It is the movement of molecules of a solvent from less concentrated solution to a more concentrated solution through the semi permeable membrane.

It is simply the movement of solutions from a hypotonic solution to a hyperrtonic solution through a semipermeable membrane. This is the mechanism of transport that is shown according to the question.

Osmosis.

Explanation:

Osmosis is the movement of molecules from a region of lower concentration to a region of higher concentration through a semi-permeable membrane. This is to ensure equal distribution of the molecules in all regions.

In this case, the nurse administered an hypotonic solution intravenously thereby expecting the solution to movie to a high Concentration region through the vein ( semi-permeable membrane).

This is the essence of osmosis and the action of the nurse.