For which one of these objects has the phenomenon of differential rotation NOT been observed?

Name: For which one of these objects has the phenomenon of differential rotation NOT been observed?
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Question

Quizplus · Accepted Answer

Differential rotation has been observed in Jupiter, the Sun, and the Milky Way Galaxy, but not in Mars. Mars, being a solid body, does not exhibit differential rotation like these other objects, which are either gaseous planets or star systems where different parts can rotate at different speeds.

For Which One of These Objects Has the Phenomenon of Differential