Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
your decision to provide this information is purely voluntary and optional ; however , if you elect not to provide it , then you may not be able to access certain content or participate in certain features of the service . 

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