The previous question asks what consequence Silas has experienced as a result of adopting Eppie. The answer, that he begins to imagine a new future for himself and her, is supported in the first paragraph: "but Eppie was an object compacted of changes and hopes that forced his thoughts onward, and carried them far away from their old eager pacing towards the same blank limit — carried them away to the new things that would come with the coming years."
Choices A, C, and D are incorrect because the lines cited do not support the answer to the previous question about the consequence of Silas's adoption of Eppie, instead describing Silas's life before Eppie entered it (choice A), how he occasionally acts in her presence (choice C), and the changes in Eppie's perception of the world as she ages (choice D).