The correct answer is: D. For use with tactile Braille devices.
Braille is a tactile writing system used by blind and visually impaired people. It is a six-dot system in which raised dots are used to represent letters, numbers, and punctuation marks. Braille can be read by running the fingers over the raised dots.
Braille media type is a type of digital document that is formatted for use with tactile Braille devices. These devices can read Braille text aloud or display it on a Braille display. Braille media type is often used for educational materials, such as textbooks and articles, as well as for other types of documents, such as letters and emails.
Option A is incorrect because Braille media type is not designed for use with all devices. It is specifically designed for use with tactile Braille devices.
Option B is incorrect because Braille media type is not designed for use with speech synthesizers. It is designed for use with tactile Braille devices.
Option C is incorrect because Braille media type is not designed for use with handheld devices. It is designed for use with tactile Braille devices.