What functionality should not be lost when resizing text to meet accessibility standards?

When resizing text to meet accessibility standards, it is essential that content visibility is not compromised. This means that the text must remain legible and clear regardless of its size. People with visual impairments or reading disabilities often rely on the ability to adjust text size to their personal preference. If text is resized and becomes obscured, difficult to read, or hidden from view, it defeats the purpose of making content accessible.

The ability to resize text for better readability is foundational in developing accessible documents, and ensuring that content remains visible is critical not only for compliance with accessibility guidelines but also for providing an inclusive experience for all users.

In contrast, while color contrast, text clarity, and document structure are all important aspects of accessibility, they do not directly relate to the specific functionality of text visibility that must be retained upon resizing, making visibility the most pertinent choice in this context.