Which of the following guidelines can improve accessibility for visually impaired users when designing Web pages?

Using larger text on web pages is a key guideline that significantly improves accessibility for visually impaired users. Many individuals with visual impairments rely on larger text to read content more easily. This can involve increasing font size and ensuring that the text has a high contrast with the background, making it more legible.

In addition to promoting readability, using larger text can enhance the user's overall experience by reducing strain when reading on a screen. It is important to consider not only the visual elements but also the usability, as larger text can lead to better comprehension and accessibility for those with varying levels of visual acuity.

While other choices may relate to accessibility, such as providing audio descriptions for video content or limiting the use of colors, they do not directly address the immediate need for visually impaired users to read text comfortably. Meanwhile, having images without text alternatives is detrimental to accessibility, as alternative text (alt text) is crucial for conveying important information to users relying on screen readers.