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    Question

    Which theory about mantle dynamics was proposed by

    Arthur Holmes in the 1930s?  
    A Slab Pull Theory Correct Answer Incorrect Answer
    B Theory of Faunal Succession Correct Answer Incorrect Answer
    C Theory of Faulting Correct Answer Incorrect Answer
    D Convectional Current Theory Correct Answer Incorrect Answer

    Solution

    Arthur Holmes proposed the Convection Current Theory, explaining mantle dynamics caused by thermal differences due to radioactive decay. These convection currents are pivotal to understanding processes such as plate tectonics and seafloor spreading. 

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