What is the keyboard interaction pattern for an Accordion widget?

The keyboard interaction pattern for an Accordion widget is designed to ensure that all interactive elements are accessible to users who rely on keyboard navigation. In this context, the correct answer states that all elements that are visible are tabbable, and arrows navigate to section headers.

This is important because it adheres to accessibility principles by allowing users to navigate through the accordion using the keyboard without needing a mouse. Making all visible elements tabbable ensures that users can reach each section of content and interact with them effectively. When the user presses the arrow keys, they can move focus between the section headers, which is a common and expected behavior in many user interface components, like the Accordion.

This interaction pattern provides a seamless experience and maintains a logical flow for users, enabling them to expand or collapse sections as needed while still using a keyboard. By aligning with these established norms, it helps in creating an accessible environment for users with disabilities, particularly those relying on keyboard navigation.