Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
15.2 you expressly acknowledge and agree that your access to and use of the services is at your sole risk . 

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