Which of the following best describes Braille?

Braille is a tactile writing system specifically designed to be read by people who are visually impaired. It consists of patterns of raised dots arranged in cells, where different configurations represent different letters, numbers, and punctuation marks. This allows individuals who cannot see to read by feeling the raised dots with their fingertips.

While verbal communication (as mentioned in the first choice) plays an important role in communication, it does not pertain to Braille, which is fundamentally a written system. The third option, stating a method of spoken interaction, is also unrelated to Braille, which is visual and tactile rather than auditory. Lastly, the notion of Braille as an official language for the hearing impaired is incorrect, as Braille is specifically tailored for reading and writing by those with visual challenges, rather than for those with hearing difficulties. Thus, labeling it as a language for the hearing impaired does not accurately reflect its purpose or use.