4.A Building a Body Paragraph of Claim, Evidence, and Commentary (REO-1.M)

A paragraph stuffed with evidence but no claim has nothing to prove. Facts and statistics don't argue for themselves; they just sit there until a writer tells the reader what they mean. That's why a paragraph needs a claim: a specific, arguable statement that the rest of the paragraph exists to support. Evidence then supplies the proof: a statistic, a quotation, an example, a fact. But proof doesn't explain itself. Commentary is the sentence or two that does the explaining, the welding work that shows exactly how this evidence makes that claim true.

Think of the three parts as a chain, not a pile. The claim says what you believe. The evidence shows something real and specific. The commentary builds the bridge between them, answering the question a skeptical reader always asks: so what? Without that bridge, a reader is left to build the connection themselves, and a reader who has to do your reasoning for you isn't convinced, just confused. This is why a strong topic sentence followed by a list of evidence still fails: the topic sentence announces a destination, but commentary is the only thing that actually gets the reader there, one piece of evidence at a time.

This pairing of evidence and commentary sits right next to the skill of choosing evidence that fits the claim in the first place. A writer who picks evidence that can't logically support the claim, like citing a bus system's low cost to prove it's safe, will find that no amount of commentary can rescue the paragraph. Commentary can explain a true connection; it cannot invent one. So the two skills work together: first choose evidence that actually bears on the claim, then write the commentary that makes the bearing visible.