voice-check
voice-format
voice-pitch
voice-volume
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Answer is Wrong!
The correct answer is C. voice-pitch.
The voice-pitch property sets pitch or tone (high or low) for the synthesized speech when reading an element; the pitch may be specified absolutely or relative to the normal pitch for the voice-family used to read the text.
The voice-check property is used to check if the user’s voice is working properly. It does not set the pitch of the synthesized speech.
The voice-format property is used to specify the format of the synthesized speech. It does not set the pitch of the synthesized speech.
The voice-volume property is used to specify the volume of the synthesized speech. It does not set the pitch of the synthesized speech.