Here's why:
* Plain language refers to writing that is clear, concise, and easy to understand.
* Verse refers to writing that is arranged in a specific rhythmic and rhyming pattern, typically found in poetry.
Therefore, plain language *not arranged in verse* would simply be writing that is in prose.
Here are some other ways to think about it:
* Prose is the opposite of poetry. It is the everyday language we use for speaking and writing.
* Verse is a specific form of writing that uses rhythm, rhyme, and meter to create a musical effect.
So, when someone asks for plain language not arranged in verse, they are really asking for straightforward writing in a natural, conversational style.