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