What is the limitation of automated accessibility testing tools regarding images?

The correct answer is that automated accessibility testing tools can determine if images have alt text but not if it meets guidelines. This highlights a key limitation of these tools. While they can scan web pages for the presence of alt attributes in images, they lack the capability to interpret the effectiveness or appropriateness of the provided text according to accessibility standards such as WCAG (Web Content Accessibility Guidelines).

For example, an automated tool might flag an image as having alt text, but it cannot assess whether the text is descriptive enough or if it communicates the same content or function as the image. Manual reviews are necessary to ensure that alt text is not only present but also accurately conveys the intended information to users who rely on assistive technologies like screen readers.

The other choices touch on various aspects but do not capture the specific limitation related to how automated tools evaluate the appropriateness of alt text. Automated tools can check for the presence of alt text, but they cannot fully evaluate its quality, which is crucial for ensuring effective accessibility.