What device do e-learning applications usually use to help users with visual impairment read digital content?

A) Projector
B) Plotter
C) Motion-sensing controller
D) Voice synthesizer

Visual Impairment

A reduction in the ability to see to a degree that causes problems not fixable by usual means, such as glasses.

Digital Content

Any content that exists in the form of digital data, including text, images, audio, and video files.

Voice Synthesizer

A software or hardware that generates spoken words from text, often used in communication devices and digital assistants.