Answer: A. Beyond
Explanation:
The prefix extra in this contest means beyond. That means that a beyond solar planet is outside solar and something that is beyond terrestrial which means something outside of Earth.
B, C, and D are incorrect answers because they are not fitting into the context of the sentence.
C. continental drift
(If the continent drifted apart, similar fossils were previously proximal would now be great distances apart)
Its the Bahamas
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