Why might a photographer choose to use high ISO settings?

A photographer may select high ISO settings specifically to capture images in low light situations. High ISO settings increase the camera's sensitivity to light, allowing for clearer images even when the ambient light is insufficient. This is particularly beneficial for scenarios such as indoor events, nighttime photography, or during twilight hours when natural light is limited. By using a higher ISO, the photographer can maintain a faster shutter speed to reduce motion blur and better freeze action, as well as use a wider aperture to allow more light into the camera without needing excessive lighting equipment.

While the other options present different characteristics of photography, they do not address the primary advantage of high ISO settings. Softer details, higher contrast, and enhanced color saturation relate more to other aspects of exposure and lighting rather than the specific benefits of increasing ISO in low light conditions.