Which of the following terms describes a unit of sound made by one impulse of the voice?

A syllable is the correct term that describes a unit of sound produced by one impulse of the voice. It typically consists of a vowel sound, which may be accompanied by consonants, and forms a single, uninterrupted expression of sound.

Understanding syllables is crucial in language education, as they represent the rhythm and flow of speech, making it easier for learners to break down words into manageable parts. This breakdown helps in promoting phonemic awareness, which is essential for reading and writing skills.

The other terms do not accurately capture the definition of a unit of sound in the same way. A root refers to the base part of a word from which other words can be formed, sound pictures are visual representations of sounds, and segmentation is an analytical process of breaking down words into their constituent sounds. None of these specifically denote a single impulse of the voice like a syllable does.