Which light sources are better for developing latent prints compared to regular room light?

The option indicating that all listed light sources are better for developing latent prints compared to regular room light is correct because UV light sources, lasers, and xenon arc lamps all provide specific wavelengths of light that can enhance the visualization of latent fingerprints.

UV light sources are particularly effective because they can reveal prints made with materials that fluoresce under ultraviolet light, making them much more visible than they would be under standard lighting conditions. Lasers can be finely tuned to specific wavelengths to target contrast between the print and the surface, enhancing detail that is often missed with regular light. Lastly, xenon arc lamps emit a bright, high-intensity light that can also aid in developing prints on various surfaces by providing a powerful illumination that brings out detail.

Regular room light does not have the specialized properties or intensity necessary to adequately reveal latent prints, which are often composed of various oils and residues that require specific conditions to be effectively visualized. Therefore, the use of UV light sources, lasers, and xenon arc lamps represents a significant advancement in latent print development techniques compared to standard room lighting.