Which word is an example of a consonant digraph?

A consonant digraph is a combination of two consonant letters that represent one single sound (phoneme). In the case of the word "chin," the "ch" is a consonant digraph. It produces a single sound, similar to the "ch" in "chair" or "cheese."

The use of "ch" is crucial because it demonstrates how two letters can come together to form a sound that is distinct from the individual sounds of each letter alone. Understanding consonant digraphs is important for language learners, as they often represent unique sounds that cannot be easily deduced from the letters themselves.

The other choices do contain consonants but do not feature a consonant digraph where two letters create a unique sound. For example, in "books," "k" and "s" are not working together as a single sound. Similarly, in "try," the "tr" is often mistaken as a digraph, but it does not produce a single distinct sound that fits the digraph definition. Lastly, "nerve" contains the letters spelling a sound, but "nv" does not create a single phonemic sound, which further distinguishes "chin" as the correct example.