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.
impatient.