Which of the following is a tool to aid visually impaired users?

Talkback is a screen reader tool designed specifically to assist visually impaired users by converting text and other visual information into spoken words. This tool allows those with visual impairments to interact with their devices more effectively, providing auditory feedback that helps navigate applications, read documents, and receive notifications. By translating on-screen content into speech, Talkback enables users to access information and perform tasks without needing to see the display.

In contrast, the other options, including word processors, image editing software, and spreadsheet applications, primarily serve different functions that do not specifically cater to the needs of visually impaired users. While these applications can be made accessible with features such as keyboard shortcuts, alternative text for images, and compatibility with screen readers, they do not inherently provide the auditory assistance that Talkback offers. Thus, Talkback stands out as a dedicated accessibility tool that directly aids visually impaired individuals.