Answer:
Correct answer is Wegener had no compelling mechanism to explain what would cause the continents to move.
Explanation:
A is not correct as through his researches he presented his theory to other scientist.
B is not correct as Wegener was very educated, and was even even working as a professor at University.
C is correct that although he presented his theory, he couldn't explain totally how it happened.
D is not correct as during his lifetime his theory wasn't widely accepted. That happened 20 years after his death.
The answer is D. The question asks how different cultures influenced each other so that rules out options A & B. Option C is about the environment being destroyed, and that really has nothing to do with foreign influence.
This change is due to an increase in earths revolution rate.(:
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