Final answer:
The correct temperature range for mortuary refrigeration to slow microbial growth and preserve bodies is 32°F to 40°F.
Step-by-step explanation:
The acceptable temperature range for mortuary refrigeration equipment is 32°F to 40°F (option a). This range inhibits microbial metabolism, slowing the growth of microorganisms significantly, which helps preserve the bodies similar to how food preservation is done in refrigeration. Using low temperatures is critical in a mortuary setting to prevent the rapid multiplication of microbes and to delay decomposition of bodies. Bacteria, especially mesophilic ones which grow best in moderate temperatures, generally have the most rapid growth between 40°F and 140°F. Therefore, maintaining refrigeration temperatures below this range is essential for proper mortuary management.