Why is the 'alt' attribute important in an <img> tag?

• A. It provides text for SEO optimization
• B. It improves accessibility and displays if the image cannot be loaded
• C. It sets the size of the image
• D. It helps in styling the image

Answer: (B)

The 'alt' attribute in an tag is crucial primarily because it improves accessibility and provides alternative text that is displayed if the image cannot be loaded. This allows users who rely on screen readers or have visual impairments to understand the content of the image. The alternative text conveys the meaning or function of the image, aiding in a more inclusive web experience.

Moreover, if the image fails to load due to a slow connection or other issues, the alt text appears in its place, ensuring that the user still comprehends the context of the content. This is particularly important for maintaining continuity in the user experience, ensuring that information isn't lost if visual elements are not available for any reason.