Read the paragraph. Trey repeated the scales. His manipulation of the keys was becoming less of a struggle, and the tuba was making sounds that were almost musical. The low notes still gave him pause, though, so he attempted them again. After countless repetitions, his room boomed with the tuba’s brassy blare. He held the last note until he was out of breath, and as he exhaled, he heard his mother say from downstairs, “That one sounded good!”

Based on the evidence provided, readers can conclude that Trey is

frustrated
determined.
talented.
impatien

normally working animals are domesticated and ruled by a master, a domesticator (tamer), to perform basic and important functions on a farm, for example. the value used in this context is animal labor in exchange for food. it is not so much a contrast to the story told by napoleon and the pigs, since the animals of that particular farm also performed functions on the farm through domestication. the only thing is that in this case, who rules them is a pig, also an animal, but very respected, to whom the other animals lent him submission. that's about a strong relationship of dependency between animal and owner.

b is the answer.   i sat on the lumpy sofa, totally exhausted, with a bad taste in my mouth, wondering what i should do next.