What type of fingerprint development is often used in low-light conditions to enhance visibility?

Fluorescent light is frequently employed in low-light conditions to enhance visibility for fingerprint development. This method is particularly effective because fluorescent light sources can significantly improve the contrast between latent prints and the substrate they are on. When fluorescent light interacts with certain fingerprint powders or chemical reagents, it can cause the prints to fluoresce, making them more visible against the background.

This technique is beneficial in crime scene investigations where traditional lighting may not provide adequate illumination to reveal latent prints clearly. The ability to visually enhance the prints allows examiners to capture better photographs and collect evidence more effectively, thereby contributing to the overall investigative process.

In contrast, the other options, such as natural light, bright room light, or infrared light, may not provide the same level of enhancement in low-light conditions compared to fluorescent light, which is specifically designed to improve visibility in these situations.