Scientists today are making greater effort to study ocean currents (洋流).

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Ebbesmeyer found out in his researches that the shoes — about 60,000 in total — fell into the ocean in a shipping accident.

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The Pacific Northwest is one of the world’s best areas for beachcombing (海滩搜寻) because winds and currents join here, and as a result, there is a group of serious beachcombers in the area. Ebbesmeyer got to know a lot of them and asked for their help in collecting information about where the shoes landed. In a year he collected reliable information on 1, 600 shoes.

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As the result of his work, Ebbesmeyer has become known as the scientist to call with questions about any unusual objects found floating in the ocean. He has even started an association of beachcombers and ocean experts, with 500 subscribers from West Africa toNew   Zealand. They have recorded all lost objects ranging from potatoes to golf gloves.

44. Ebbesmeyer is most famous for _________.

A. traveling widely the coastal cities of the world

B. making records for any lost objects on the sea

C. running a global currents research association

D. phoning about any doubtful objects on the sea

老师们好，官方给的答案是D。我看不明白为什么，请指点迷津。谢谢。