Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you are required to inform the host of any medical or physical conditions , or other circumstances that may impact your and any additional guest 's ability to safely participate in any experience , event or other host service . 

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