Final answer:
A voice synthesizer, also known as text-to-speech (TTS) software, converts written text into spoken words. The correct answer to the question is 'C. voice synthesizer'. This technology provides accessibility for those with visual impairments or reading difficulties.
Step-by-step explanation:
Software that converts text into speech is called C. voice synthesizer. A voice synthesizer, also commonly referred to as text-to-speech (TTS) software, takes written text and transforms it into speech. This technology is especially useful for individuals with visual impairments or reading difficulties, enabling them to access written content.
Different voice synthesizers can have a variety of voices and languages, allowing the user to customize the audible output to their preferences. For example, they can choose a voice that sounds more masculine or feminine, or select the accent or speaking rate that they find most comprehensible.
So when faced with the question, the correct answer is C. voice synthesizer. Not only is this technology beneficial for personal use, but it is also employed in various fields such as navigation systems, e-learning platforms, and virtual assistant software.