Final answer:
The sentence contains a punctuation error. The correct revision is: Practicing every day, in the opinion of most teachers, improves the chances of a musician. The addition of commas before and after the phrase 'in the opinion of most teachers' helps to set it off as nonessential information and improves the flow and clarity of the sentence.
Step-by-step explanation:
The sentence contains a punctuation error. The correct revision is: Practicing every day, in the opinion of most teachers, improves the chances of a musician. The addition of commas before and after the phrase 'in the opinion of most teachers' helps to set it off as nonessential information and improves the flow and clarity of the sentence.
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