What do you mean by res communis humanitatis?

The correct answer is Option (4) → Areas which are located outside the sovereign jurisdiction of any one state and requires common governance by international community.

"‘Commons’ are those resources which are not owned by anyone but rather shared by a community. This could be a ‘common room’, a ‘community centre’, a park or a river. Similarly, there are some  areas or regions of the world which are located outside the sovereign jurisdiction of any one state, and therefore require common governance by the international community. These are known as res communis humanitatis or global commons. They include the earth’s atmosphere, Antarctica  the ocean floor, and outer space. ,