Which of the following was classified as an ocean most recently

a. the indian ocean
b. the southern ocean
c. the pacific ocean
d. the atlantic ocean

The correct answer is B. The Southern Ocean was classified as an ocean most recently.

Explanation:

The Southern Ocean, also called the Antarctic Ocean, is a part of the world ocean whose existence as ocean and extension are disputed. In general, its existence is recognized from the coasts of Antarctica to 60 ° South, conventional limits with the Atlantic Ocean, the Pacific Ocean and the Indian Ocean. It is the penultimate ocean in extension, the Arctic Ocean being the smallest. The International Hydrographic Organization defined its extension and existence in 2000, coinciding with the limits of application of the Antarctic Treaty, but the decision was not ratified.

the answer is b. osage.

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explanation: