Who divided the oceanic part of the earth into five oceans?
A. Cartographers
B. Geographers
C. Geologists
D. None of these

Hint: Water is a rare commodity in our nearby planetary group like no other planet and the sun itself does not have water. The complete earth's region is covered with 71 percent of water found in the ocean and the leftover 29.2 percent with landmasses.

Complete answer: The oceans are restricted to the incredible sorrows of the world's external layer. The oceans, in contrast to the mainlands, combine so normally into each other that it is difficult to separate them. The geographers have separated the maritime portion of the earth into five oceans, in particular the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, the Southern Ocean and the Arctic Ocean. The different oceans, gulf, bays and different deltas are portions of these five enormous oceans.

Now let us examine the option
Option A - Cartographers are the people who create maps of various types, such as world map, local bus routes, railways routes, or secret pirate treasures etc. Cartography refers to the study and practice of maps.
Option B - Geographers are referred to the people who deal with the study of geography, the study of human society as well as the Earth’s natural environment. Geography is the description and explanation of the areal difference of the earth’s surface
Option C - Geologists deal with the study of materials that make up the solid earth and also about the forces that affect the earth.
Option D - This option is invalid because geographers who deal with geography have divided the oceans of the earth into five different oceans for a better understanding of the earth.

Thus, The correct answer is option (B).

Note: The ocean floors can be isolated into four significant divisions - the Oceanic Deeps, the Deep Sea Plain, the Continental Slope and the Continental Shelf. Plus, these divisions there are likewise major and minor relief features in the ocean floors depths like hills, ridges, seamounts, guyots, ravines, canyons and so on.