The revision which correctly uses dashes to revise the error is; Choice C: Everyday Americans-not just prodigies—should have access to learning to play an instrument.
Use of dashes to revise the error
According to the task content;
- The revised sentence is; Everyday Americans not just prodigies should have access to learning to play an instrument.
From the sentence above, it follows that the initial sentence might have been;
- Everyday American prodigies should have access to learning to play an instrument.
Hence, on revision of the error, the revised sentence is as given in Choice C.
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