Final answer:
Juan should start with an introduction, present three to five major supporting points, and conclude by summarizing the main points and reinforcing the author's claim.
Step-by-step explanation:
To best organize the ideas in his presentation about the claim an author made in an article about Paris, France, Juan should follow a clear and effective structure. One recommended approach is to use an outline or diagram to organize the main points and evidence. Juan can start with an introduction to introduce the author's claim, followed by three to five major supporting points that provide evidence to support the claim. Finally, he should conclude by summarizing the main points and reinforcing the author's claim.