Final answer:
The correct answer is B) high seas, which refers to the part of the ocean that are beyond the jurisdiction of any country. These waters are known as the pelagic realm in oceanography, which spans the majority of Earth's hydrosphere.
Step-by-step explanation:
Nonterritorial waters, also known as the high seas, are parts of the ocean that are not included within the territorial waters of any country. According to international law, the high seas are open to all states, whether coastal or land-locked. The term pelagic realm is also relevant in this context. The pelagic realm (or pelagic zone) refers to the open ocean waters that are not close to the bottom or near the shore. This includes the high seas, which consist of the majority of the hydrosphere and cover over two-thirds of the Earth's surface. The pelagic realm is critical to marine biodiversity and contains many different ecological zones.
The nonterritorial waters, which are international and not under the jurisdiction of any single nation, are officially designated as the high seas, a term widely recognized in maritime law and oceanographic studies.