What do constant digraphs represent in phonics?

Constant digraphs represent two consonants that combine to create a single sound. This concept is important in phonics because understanding how letters work together to produce unique sounds can improve reading and spelling skills. For instance, in words like "ch," "sh," or "th," the individual sounds of the letters are not pronounced separately; instead, they merge into a new sound that is distinct from the sounds of each letter alone.

This understanding of constant digraphs highlights how certain combinations of consonants can alter the pronunciation of words, which is critical for students learning to decode written language and develop their literacy skills. In this context, it's clear that the definition of a constant digraph directly ties to the foundation of phonics instruction. Other options do not accurately reflect the function of constant digraphs in phonics, focusing instead on different aspects of letter-sound relationships.