Why is adjusting the ISO important for low-light photography?

Adjusting the ISO is crucial for low-light photography because it allows for brighter images without the need to increase the exposure time. In low-light conditions, the camera sensor struggles to capture enough light, which can lead to dark images. By increasing the ISO setting, you make the sensor more sensitive to light, enabling it to capture brighter images even in challenging lighting conditions.

This adjustment helps photographers achieve the desired exposure without having to prolong the shutter speed, which can lead to motion blur if the subject is moving or if the camera isn't stabilized. Thus, the ability to raise the ISO effectively balances the need for adequate exposure while maintaining image sharpness is what makes this option the correct choice.

In contrast, while increasing the shutter speed can freeze motion, it doesn’t directly relate to the ISO setting resolving the low-light challenge, and improving color accuracy is usually more related to white balance settings and shooting techniques rather than ISO adjustments. Decreasing overall image quality is more of a concern with extremely high ISO settings because that can introduce noise, but moderate adjustments in low-light scenarios tend to yield favorable results.