The correct sentence uses 'nor' in a compound sentence.
In the given options, the sentence punctuated correctly is: 'Roy did not feel nervous about performing, nor was he worried about winning the award.'
This follows the rule for using 'nor' in compound sentences, requiring the auxiliary verb to move before the subject in the second clause.
Remember that for sentences with compound subjects joined by 'nor', the verb must agree with the subject closer to it.
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