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When the Moon reaches equal periods of orbital and rotational periods, it's known as _______ rotation.
A. non-conforming
B. asynchronous
C. imbalanced
D. synchronous

Answer :

It is known as synchronous rotation. A good way to remember it is that it looks and sounds a lot like "synchronize".
When the Moon reaches equal periods of orbital and rotational periods, it's known as synchronous rotation.

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