Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if you are booking for an additional guest who is a minor , you represent and warrant that you are legally authorized to act on behalf of the minor . 

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