| Answer | Crossword Clue |
|---|---|
| OPTIN | Choose to participate |
| ABSTAIN | Choose to not participate |
| ABSTAIN | Choose not to participate |
| OPTOUT | Choose to not participate |
| OPTOUT | Choose not to participate |
| OPT | .. in (choose to participate) |
| OPT | Choose to participate, with "in" |
| OPT | Choose not to participate, with "out" |
