What does it mean for content to be perceivable?

For content to be perceivable, it means that it must be presented in a way that all users can access and understand it, regardless of their sensory abilities. This encompasses a range of factors, including providing text alternatives for non-text content, ensuring sufficient contrast between text and background, and making audio content available in a format that can be perceived by individuals with hearing impairments. The goal is to create content that can be perceived by people with a variety of disabilities, ensuring that information is available to everyone in an inclusive manner.

The other options touch on relevant aspects of web accessibility, like adaptability to devices or minimal user input, but they do not capture the core principle of perceivability, which is fundamentally about ensuring that content can be accessed and understood by all users, including those with disabilities.