Question: Rhea is a moon of Saturn. Which of these facts about Rhea best indicates that it does not have a water cycle in which water changes state?

  Options: 
 A. Its radius is 765 km.
 B. Its density is about 1.3 kg/m3.
 C. Its period of rotation is about 4.5 Earth days.
 D. Its temperature is between -174°C and -220°C.
Answer: D