Since structural linguistics describes a language beginning with the phonological level and ending with the sentence level it is assumed that the appropriate sequence of learning from

• A. Sound to sentence
• B. Sentence to sound
• C. Word to sentence
• D. Phrase to sentence

Answer: (A)

In structural linguistics, language is analyzed as a progression from the smallest sound units up to full sentences. Since learners first encounter and produce phonological patterns—phonemes, stress, intonation—these foundations must be established before combining units into words, phrases, and then sentences. So the natural learning sequence goes from sound to sentence: start with phonology, move to words, then to phrases, and finally to sentences. The other sequences start at higher levels and skip this foundational layer, which doesn’t align with how language structure builds up from sounds.