Here's the breakdown:
* The "u" in "nuts" is a short vowel sound. It sounds like the "u" in "cup" or "sun".
* However, the "u" in "nuts" is actually spelled with two letters: "u" and "t". This is called a digraph.
* Digraphs are two letters that represent a single sound. In this case, the "u" and "t" together make the short "u" sound.
So, while the sound itself is short, the spelling uses a digraph, making it slightly more complex.
