Within a tone unit, which term refers to the most prominent syllable or the main stress?

• A. Tonic Syllable
• B. Nucleus
• C. Word Stress
• D. Weak Form

Answer: (A)

In a tone unit, the most prominent syllable—the one that carries the main emphasis and the primary pitch movement—is called the tonic syllable. This syllable serves as the anchor for the unit’s intonation, signaling focus or new information by hosting the strongest stress and the rise or fall in pitch. The remaining syllables are less prominent, providing the surrounding rhythm and meaning without competing with that main emphasis.

The nucleus refers to the central vowel core of a syllable and is not about overall prominence in the tone unit. Word stress concerns which syllable within a word is stressed, not the emphasis pattern across an entire tone unit. Weak forms describe reduced pronunciations of function words, not the standout syllable in a tone unit.