Final answer:
The next step is to explain how well the reasons support the argument's claim.
Step-by-step explanation:
The next step in evaluating the effectiveness of an argument after identifying its reasons and evidence is to explain how well the reasons support the argument’s claim. This involves assessing the strength and relevance of the reasons provided and determining whether they effectively support the claim being made. It's important to consider whether the reasons are logical, convincing, and based on accurate information to evaluate the overall effectiveness of the argument.