To clarify why readers should agree with a claim means to provide further explanation, evidence, or reasoning that supports the validity or importance of the claim. This clarification helps to strengthen the argument and convince readers of its credibility. It may involve presenting additional facts, statistics, logical arguments, expert opinions, or examples that help to persuade the readers and address potential counterarguments or doubts. By doing so, the clarification aims to make the claim more compelling and increase the likelihood of agreement from the readers.
