フリー問題

問題文

A magazine publisher sends three unrelated newsletters. Readers should be able to stop one of them and keep receiving the other two. Which mechanism supports that?

選択肢

1. A publication list for each of the newsletters, so an opt-out recorded against one list leaves the other two unaffected.
2. A separate sender profile for each newsletter, so an opt-out recorded against one list leaves the other two unaffected.
3. A single suppression list for all three newsletters, so an opt-out recorded against one list leaves the other two unaffected.
4. A dynamic content rule inside one newsletter, so an opt-out recorded against one list leaves the other two unaffected.