Concept:The smallest unit of speech that carries meaning is called a morpheme. It cannot be divided further without losing its meaning.
Explanation:Morphemes are the building blocks of words. They have a consistent meaning and grammatical function.
For example, the word 'unable' has two morphemes: 'un-' (meaning 'not') and 'able' (meaning 'capable').
Other units like syllables, phonemes, and words do not fit the definition of the smallest meaningful unit.
A syllable is a single sound segment; a phoneme is the smallest sound unit that changes meaning (e.g., /p/ vs /b/). Words are larger units composed of one or more morphemes.
Therefore, the correct answer is morpheme.
Answer:A. morpheme