Answer:
The correct answer is: They use dialogue to reveal the reasons some people doubted the truth of these stories.
In paragraphs 7-10, the tension in the passage is built through the use of dialogue that reveals the doubts some people have about the truth of Señor Vicente's stories. The younger generation, represented by Julián, questions the validity of these stories and is skeptical about their accuracy. Señor Vicente, on the other hand, is deeply invested in his family's history and believes it to be true. This disagreement between the two generations creates tension in the passage, as the reader is left wondering who is right and whether the stories are true or not. The dialogue between the two characters adds depth to their conflict and highlights the generational divide that exists between them.