Which attribute is used with the <img> tag to specify the alternate text?

The attribute used with the tag to specify the alternate text is "alt." This attribute is crucial for accessibility and user experience, as it provides a text representation of the image for screen readers used by visually impaired individuals. In addition, if the image fails to load for any reason, the browser will display the text from the alt attribute in its place. This ensures that users still receive context about the image, even if they cannot view it. Overall, utilizing the alt attribute is a best practice in HTML to enhance accessibility and improve SEO.