Which is an example of a digraph?

A digraph is a combination of two letters that together create a single sound or phoneme. In this context, "ch" is a well-known example of a digraph, as it produces a distinct sound that is different from the individual sounds of the letters 'c' and 'h' when pronounced together, as in words like "chair" or "check."

The other combinations in the options, such as "sn" and "br," represent consonant clusters, where each letter retains its sound when they are pronounced together, resulting in the blending of those auditory signals rather than forming a new single sound. For instance, "sn" as in "snail" and "br" as in "brick" do not meet the criteria for a digraph since they sound out the individual consonant sounds without creating a new one.

Therefore, while only "ch" is a true example of a digraph, the inclusion of all choices as potentially correct indicates a misunderstanding of the definition of a digraph. The option that suggests "ch" as a digraph is accurate, but the statement suggesting that all options are examples of a digraph does not hold up under further examination. Thus, the better choice would focus solely on "ch"