How do speech sounds vary across different dialects?

The variation of speech sounds across different dialects primarily occurs through the incorporation of distinct phonetic realizations and variations in vocabulary. Each dialect may exhibit unique pronunciations of the same words, resulting in differences in how speech sounds are articulated. For example, in some dialects, certain vowel sounds may be pronounced more tensely or laxly, and consonants may be produced with varying degrees of aspiration. Additionally, different dialects might use specific words or phrases that are characteristic of that particular region or cultural background, leading to further differentiation in speech.

Maintaining uniform speech sounds across all regions does not accurately depict the nature of dialects, as dialects are defined precisely by their variations. Similarly, while vocabulary and syntax might differ between dialects, the emphasis on phonetic realizations highlights the core aspects of how sounds can vary. Prosodic features, such as intonation and rhythm, can differ as well, but stating that these features remain the same oversimplifies the variability observed in different dialects. Thus, the correct choice acknowledges the complex interplay of sound and vocabulary in dialect variation.