The correct answer is c. challenging the credibility of sources. Ramona asks in a questionable way if the information or evidence from Pettit's book comes from a fictional source. Han has backed up his information with the evidence of a review of Giovanni Fiorini's book. Pettit makes sure that the material in this book has been written by a narrator and not by a historian.
Han applies option c- he is challenging the credibility of sources. Ramona ,surprised, asks him if the evidence from Pettit's book was from fictional sources. Hans supports his claim through a review of Giovanni Fiorini's book. The material from this book which had been written by a story-teller and not by a historian was used by Pettit.
Option a- is wrong. Hans is not determining new research goals. He is questioning the credibility of sources.
Option b-is wrong. Hans is evaluating what an author said about Giovanni Fiorini's book. The material from this 'great' source was used by Pettit in <em>his </em>book.
Option d is wrong. Ramona is asking clarifying questions. She wants Hans to justify his claim. This states that the credibility of sources can be questioned.
Percy realizes that the voice wants him to steal the lightening bolt. He also realizes that the voice isn't trying to pull him into the chasm, but rather pull itself out.
Explanation:
From Percy Jackson & the Olympians: The Lightning Thief