In the options, pair of certain densely populated regions of the world are given along with the reason for such density. Identify the pair which is not correctly matched:

Kobe-Osaka (Japan) :Minerals

The correct answwer is Option 2: Kobe-Osaka (Japan) :Minerals

The Kobe-Osaka region of Japan is thickly populated because of the presence of a number of industries and not because of minerals.

Katanga (Zambia): Copper - This is correctly matched as Katanga is known for its rich copper deposits.

Tokyo: Urbanisation - This is correctly matched as Tokyo is a major urban center with high population density due to urbanization.

Gangetic Plains: Landforms - This is correctly matched because the Gangetic Plains are characterized by fertile alluvial soil, making them densely populated agricultural regions.