"Crabs live in the sand."

Translation: 모래 속에 게는 산다.

[EricDutra4]

These seemingly arbitrary order of words for the right answer really gets on my nerves

[wintertriangles]

Indeed. 게는 should definitely be in the front.

[ElCion96]

Yeah 게는 모래 속에 산다 should also be accepted. Not to mention that it is a smoother sentence.