Which is the primary difference between voice and speech?

The primary difference between voice and speech lies in their fundamental functions and production mechanisms, which makes the choice referring to voice being produced by the vocal cords and speech being a language expression the most accurate.

Voice is a result of sound production that occurs when air from the lungs is pushed through the vocal cords, causing them to vibrate. This generates the sound that can be modulated in terms of pitch, volume, and quality. In contrast, speech encompasses the articulation and expression of language through the coordinated use of phonetics, grammar, and vocabulary. It is the verbal manifestation of thoughts and ideas.

This understanding helps clarify why the other choices do not accurately capture the distinction. For example, while non-verbal cues can be part of the communication process, voice is fundamentally a vocal phenomenon rather than a non-verbal cue. Furthermore, clarity relates more broadly to the intelligibility of speech rather than just voice, and fluency pertains to how smoothly speech is produced, rather than being a defining characteristic that differentiates it from voice. Lastly, while tone of voice can convey emotion and meaning, it does not encompass all aspects of voice, nor does it address the broader, more complex elements involved in speech such as sentence structure and word choice. Thus, the