What types of output can screen readers provide?

Screen readers are software applications designed to make digital content accessible for individuals who are blind or visually impaired. They primarily convert text displayed on a screen into synthesized speech or tactile output. The correct choice indicates that screen readers provide audio output, allowing users to hear the information, and Braille output, enabling users to read the text through touch.

Audio output functions by using speech synthesis, producing spoken language from on-screen text. This allows users to navigate through content, listen to documents, and interact with applications. On the other hand, Braille output involves connecting the screen reader to a Braille display, which translates the text into Braille characters that can be read by touch.

The other options do not accurately represent the capabilities of screen readers. While text and video may often be present in digital content, they are not forms of output that screen readers provide; rather, these formats are processed and converted into accessible audio or Braille. Visual output contradicts the very purpose of a screen reader, which serves individuals with visual impairments who rely on non-visual means of accessing information. Tactile output is correct in the context of Braille, but the choice of tactile alone does not encompass the full spectrum of audio capabilities provided by screen readers.