Take another look at the original sentence:

Poor Paola listened to her stomach rumbling loudly, she would have to wait twenty more minutes before she could dash to the cafeteria for a quick donut and soda.

You chose to fix it the correct way:

Poor Paola listened to her stomach rumbling loudly; she would have to wait twenty more minutes before she could dash to the cafeteria for a quick donut and soda.

A semicolon is always a correct way to join two main clauses that are closely related in meaning. Poor Paola listened to her stomach rumbling loudly is the first main clause; she would have to wait twenty more minutes is the second main clause.

Go to the next sentence.

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