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.

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explanation:

i don't understand

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

the correct answer is d.   to change the pace

explanation: