A claim is that, a brief statement that have reasons and evidence behind it. While a claim and an opinion are very similar, claims are more more like a fact while an opinion is what you think.
A rebuttal is when someone counters your claim with a counterargument. See, rebuttals and counterarguments are versions of claims that happen after the main claim.
<span>Thoreau defends his approach in the second paragraph of “Economy” in Walden by giving a simple a simple and sincere account as he knows himself best.</span>