Question

What is the primary goal of China's ocean drilling ship Mengxiang, and what scientific milestone does it aim to achieve?

A Explore ocean biodiversity; Reach the ocean's surface
B Study climate change; Reach the Earth's core
C Investigate marine geology; Reach the ocean's floor
D Search for deep-sea minerals; Reach the Mohorovicic discontinuity
E Examine ocean currents; Reach the Earth's mantle
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