In the second paragraph, the description of Silas and Eppie's interaction outdoors conveys the extent to which he has changed since her arrival: where he once worked all day at his loom to earn more and more money, he now "might be seen in the sunny mid-day" strolling with her, accepting the flowers she brings him, or listening to birdcalls with her. With these experiences also come "crowding remembrances" of his early life — the life he led before amassing his hoard of gold. In its entirety, the paragraph can therefore be seen as illustrating the profound change into a more sociable being that Silas has undergone as a result of parenting Eppie.
Choice A is incorrect because the second paragraph does not present a particular moment when Silas realizes that Eppie has changed him but instead describes a pattern of behavior indicative of that change. Choice B is incorrect because the second paragraph shows the benefits Silas derives from Eppie's presence, rather than any sacrifices he has made for her. Choice D is incorrect because the second paragraph dramatizes a change in Silas's life overall, rather than showing a change in the dynamic that has arisen between Silas and Eppie.