List one way to improve image accessibility.

Providing descriptive alt text for images is a fundamental practice for improving image accessibility. Alt text, or alternative text, serves as a textual substitute for images, allowing users who are visually impaired or using screen readers to understand the content and context of the image. This description should convey the purpose of the image and any relevant details that would inform a user who cannot see the image itself.

By implementing descriptive alt text, you enhance the user experience for individuals relying on assistive technologies, ensuring that all users can access and comprehend the information equally. This practice supports inclusivity and adheres to accessibility standards, such as the Web Content Accessibility Guidelines (WCAG), which emphasize the importance of providing text alternatives for non-text content.

The other options do not address the critical need for providing valuable information to users who might not visually perceive the meaning of an image. For instance, using decorative images exclusively doesn't serve a functional purpose for accessibility, and restricting images to users with visual impairments or using images only as backgrounds can further limit engagement and understanding for all users.