Which attribute is commonly used to provide alternative text for images in HTML?

The attribute commonly used to provide alternative text for images in HTML is the alt attribute. When an image is included in a webpage using the img tag, the alt attribute serves an important purpose. It describes the content of the image, which improves accessibility for users who rely on screen readers. This is crucial for visually impaired individuals who may not be able to see the image but can understand the context through the alternative text provided.

Additionally, the alt text will display in place of the image if the image cannot be loaded for any reason. This ensures that users still receive some information about what the image is meant to convey, maintaining a better overall user experience on the website.

The other attributes listed do not serve the same function. The title attribute is used for providing supplementary information about an element and typically appears as a tooltip when the user hovers over the element, rather than as a description of an image. The src attribute is crucial for specifying the source of the image file itself, determining which image is to be displayed on the page. The href attribute is associated with hyperlinks, indicating the destination URL of links, and is not relevant to images.