Step 1: Analyze the name of the initiative.
The name itself gives strong clues: 'One Sun' points to solar energy, and 'One World, One Grid' points to a global, interconnected network.
Step 2: Understand the concept.
The 'One Sun, One World, One Grid' (OSOWOG) initiative was first proposed by India. The vision is to build a global ecosystem of interconnected renewable energy resources, primarily solar power. The idea is that the sun is always shining somewhere on Earth. By connecting different regional electricity grids, we can transmit solar power from sun-rich areas to areas where it is night, ensuring a continuous supply of clean energy.
Step 3: Connect the concept to the options.
The initiative is fundamentally about sharing solar energy across borders through a common grid. Therefore, it is a form of international solar energy cooperation. It is a specific plan within the broader field of "world future energy" but is not about internet or trade.