"This turtle is sleeping."

Translation: Kesor qintir ēdrus.

[PapaiClaudio]

The right answer was not included. Instead it says Qintir bisor ēdrus should be it. Little bug?

[Xenon-]

Qintir bisor ēdrus is one of the correct answers, perhaps it was added recently and caused a bug in the Duolingo system; most probably.