6. They originate 6 from intentionally manufactured for industrial use or from larger plastic waste broken down by sunlight, weathering or wave action.
(A)above
(B)both
(C)either
(D)neither
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統計: A(1), B(0), C(0), D(0), E(0) #3884946
統計: A(1), B(0), C(0), D(0), E(0) #3884946