Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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the arbitrator may only conduct an individual arbitration , may not consolidate more than one person 's claims and may not preside over any form of representative or class proceeding , or any proceeding on behalf of or involving more than one person or persons . 

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