Final answer:
The thesis statement is wordy because it includes unnecessary information.
Step-by-step explanation:
The word or phrase that makes the thesis statement wordy is 'This thesis statement is based on Disney's Frozen.' This part of the sentence is unnecessary because it does not add any new information to the thesis statement. The thesis statement can stand alone without mentioning Disney's Frozen.
A revised version could be: 'Olaf's only role is to provide funny comic relief.'
Learn more about Wordiness in thesis statements