Which attribute would you use to specify how a linked document opens?

The attribute used to specify how a linked document opens is the target attribute. This attribute offers control over where the linked document will be displayed when a user clicks on the link. For example, setting the target to "_blank" will open the linked document in a new tab or window, while "_self" will open it in the same frame as the current document. This versatility allows developers to enhance user experience by deciding how users navigate through their website or application.

The other attributes serve different purposes. The href attribute is essential for defining the URL of the linked document but does not control how it opens. The src attribute is used for specifying the source of an embedded resource, such as images or videos, and is not applicable for links. The alt attribute provides alternative text for images, which is important for accessibility but does not relate to link behavior.