During embalming, media for preservation can be in the form of what?

In the context of embalming, preservation media can indeed be in various forms, making the choice of "all of the above" valid.

Liquid solutions are commonly used in embalming because they can effectively penetrate tissues and reach areas that solid or gaseous forms cannot. These solutions typically contain formaldehyde, methanol, and other chemicals that aid in the preservation process by disinfecting and delaying decomposition.

Gas formers refer to substances that can produce gases which may also be employed in embalming. These gases can help in the preservation of the body by creating an environment that is unfavorable for bacteria and other decomposing agents.

Solid materials can also play a role in preservation. For example, some embalmers may use powdered chemicals that absorb moisture or act as desiccants, effectively reducing the rate of decomposition.

Therefore, media for preservation during embalming can be effectively utilized in liquid, gaseous, and solid forms, making the selection of all these options appropriate.