What characterizes regular words?

Regular words are characterized by the fact that they have letters that correspond to their most common sounds, especially in terms of phonics and pronunciation. This means that the way the letters are arranged in these words typically follows predictable phonetic patterns. For example, the letter "c" usually makes a hard sound when followed by "a," "o," or "u," and a soft sound when followed by "e," "i," or "y." These consistent sound-letter relationships help learners decode and pronounce unfamiliar words based on their knowledge of regular words.

In contrast, while some choices might seem relevant, they do not capture the essence of what makes a word "regular." The option about consistent vowel sounds might be partially accurate, but not all regular words necessarily fit this criterion. Furthermore, the notion that words are always phonetically spelled or belong to a specific part of speech does not accurately represent the broad application of regular words across different contexts and forms.