Which principle of accessibility ensures content is available in various formats?

The principle of accessibility that ensures content is available in various formats is "perceivable." This principle emphasizes that information and user interface components must be presented to users in ways that they can perceive. This includes providing text alternatives for non-text content, such as images, and offering various formats for content delivery, including audio, braille, or sign language.

By adhering to the perceivable principle, content creators make their information accessible to a wider audience, including individuals with disabilities who may require different methods of accessing information. This can involve using captions for videos or alternative text for images, ensuring that all users have an equivalent experience regardless of how they access the media. Thus, the emphasis is on presenting content in formats that can be easily understood and processed by all users.