How can iodine-developed latent prints be accelerated for better visibility?

Iodine-developed latent prints can be accelerated for better visibility through exposure to sunlight. This method works because iodine sublime's volatilization process allows the iodine to adhere more effectively to the fats and oils present in the latent print. Sunlight increases the energy in the environment, which can enhance the sublimation rate of the iodine. When the iodine vapor interacts with the latent print, it forms a visible image that can be better seen under light.

While other methods might influence the visibility of prints, such as using heat, moisture, or varying temperatures, they do not have the same direct enhancing effect on iodine as sunlight does. Heat can sometimes cause deterioration or loss of latent prints instead of helping to reveal them. Cold temperatures are generally not effective for accelerating iodine development. High humidity may affect the iodine's behavior but does not serve to enhance its visibility as effectively as sunlight does. Hence, exposing iodine-developed latent prints to natural light is the correct method for enhancing visibility.