Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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as a parent or guardian of a child under the age of thirteen ( 13 ) from whom we have collected personal data , you have the right to review and request deletion of such personal data , and to refuse to permit further collection or use of such personal data . 

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. OPTIONS: ["Choice of law", "Content removal", "Arbitration", "Unilateral termination", "Unilateral change", "Contract by using", "None", "Jurisdiction", "Limitation of liability"].