Final answer:
The sentence that is punctuated correctly is: 'I have been preparing all week; I feel nervous but ready for the audition.'
Step-by-step explanation:
The sentence that is punctuated correctly is: I have been preparing all week; I feel nervous but ready for the audition. In this sentence, a semicolon is used to separate two independent clauses that are closely related. It is used to show a stronger connection between the two ideas compared to using a period or a comma. The sentence is correctly punctuated because both clauses are complete sentences and the semicolon is used appropriately.
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