HTML and CSS Certification Practice Test

The alt attribute in the img tag serves an essential role in web accessibility and SEO. Its primary function is to provide a textual description of an image that conveys the image's content or purpose. This description is displayed in place of the image if it cannot be rendered for some reason, such as when a browser cannot load the image due to a broken link or when users are utilizing screen readers to access content on the web. By including a well-crafted alt attribute, creators ensure that all users, including those with visual impairments, can understand what the image represents or conveys contextually within the content. This not only enhances user experience but also contributes positively to search engine optimization by giving search engines more context about the content of the image. The other options do not accurately describe the function of the alt attribute. Specifying the path of the image is managed by the src attribute, setting the title of the image would typically require a title attribute or use of an adjacent text element, and controlling the size of the image is managed through the width and height attributes or CSS styling, rather than the alt attribute.