What process describes the primary embalming method using semipermeable membranes?

The correct answer to the question regarding the primary embalming method that utilizes semipermeable membranes is osmosis. Osmosis is the process in which water molecules move through a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.

In the context of embalming, understanding osmosis is crucial as it explains how embalming fluids enter the cells and tissues of the body. When embalming fluid, which is comprised of various solutes, is introduced into the body, the concentration gradient drives the movement of fluid into the tissues where there is a higher concentration of solute. This process helps preserve the body by replacing body fluids with preservative chemicals, and it ensures that those chemicals are uniformly distributed throughout the tissues.

Other processes like diffusion and active transport have different mechanisms and applications. Diffusion involves the movement of solutes from an area of higher concentration to an area of lower concentration but does not specifically relate to the movement of water through a membrane. Active transport requires energy to move substances against their concentration gradient, which is not applicable in the passive movement seen in osmosis. Filtration involves the movement of solutes and solvents through a membrane due to pressure but is also distinct from the selective movement