Which of the following is a component often found in embalming fluids designed to enhance preservation?

Formaldehyde is a key component in many embalming fluids, specifically because of its effectiveness as a preservative. It acts as a hardening agent, helping to fixate the proteins in tissues, which prevents decomposition and helps maintain the natural appearance of the body for a longer time. This chemical compound has a strong affinity for biological tissue, making it ideal for preserving anatomical structures.

In addition to its preservation qualities, formaldehyde also aids in disinfecting the body by eliminating pathogenic microorganisms, thus further enhancing its role in the embalming process. Because of these properties, embalming fluids typically contain formaldehyde in varying concentrations, tailored to the specific needs of the embalming procedure and the conditions of the body being treated.

The other options, while they may have their own uses in embalming or other contexts, do not serve the dual purpose of preservation and disinfection in the way that formaldehyde does.