No, this is not a trick question.
Basically,
Is your system set up to keep Zoa / Palys ? And you try to keep other types Corals in the same tank / system.
or
Is your system set up to keep LPS ? And you try to keep Zoa / Palys in the same tank / system.
or
Is your system set up to keep SPS ? And you try to keep Zoa / Palys in the same tank / system.