What causes the reduction in the rate of sublimation?

The reduction in the rate of sublimation is primarily influenced by several factors, including temperature, pressure, and humidity. Lower temperatures decrease the kinetic energy of molecules, making it less likely for them to escape from the solid phase to the gas phase. Additionally, increased pressure can suppress sublimation by forcing molecules back into the solid state. Higher humidity can also hinder sublimation by providing a more saturated environment, which reduces the capacity of the air to hold additional vapor.