Answer :
Add: This is just one example of the benefits schools get from offering music classes to their students.
This sentence follow best because it references, specifically, offering music classes versus "music students" which is inaccurate. It implies there are other benefits beyond just graduation rate, which most would agree there are (cultural, etc).
The sentence that most effectively completes the paragraph is, "This is just one example of the benefits schools get from offering music classes to their students."
What is benefits?
Benefits means a profit gain from something.
Because the music programs in the school is benefiting the school, as the graduation rate is much higher in schools offering music classes, and it gives better publicity to the schools as its students are growing educationally as well as culturally. Thus, the sentence that most effectively completes the paragraph is, This is just one example of the benefits schools get from offering music classes to their students.
Hence the correct option is, "This is just one example of the benefits schools get from offering music classes to their students."
To know more about benefits:
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