Name a practice that makes a website operable.

Ensuring all functionality is available via a keyboard is a vital practice that makes a website operable because it allows users who cannot use a mouse—such as those with mobility impairments or certain cognitive disabilities—to navigate and interact with the website efficiently. Keyboard accessibility means that all actions that can be performed with a mouse should also be accessible through keyboard commands, which can include using the Tab key to navigate between interactive elements and the Enter key to activate them. This inclusivity aligns with web accessibility standards, such as the Web Content Accessibility Guidelines (WCAG), which emphasize the importance of operability for all users.

In contrast, practices that rely solely on mouse actions hinder accessibility for users who may have difficulties with fine motor control or other impairments. Additionally, providing content primarily in video format may exclude individuals who are deaf or hard of hearing if captions or transcripts are not provided. Similarly, using frequently changing dynamic content can create challenges for users who may struggle to keep up with rapid updates or who rely on assistive technologies that may not effectively interpret such changes. Therefore, keyboard accessibility stands out as a fundamental requirement for ensuring an operable web experience for everyone.