Answer: B) Include at least three specific detailed examples after you have introduced your claim.
Step-by-step explanation: When writing an argumentative essay, the most important element is the claim, it is the base for all the essay, so the claim should be clear and explained in the introductory paragraph of the essay. After we have introduced the claim, we can present the ideas and evidence that support that claim, like specific detailed examples, so the most effective way for Francis to organize the reasons and evidence clearly is including at least three specific detailed examples after he has introduced his claim.