Which is the largest ocean in the world?

The Pacific Ocean is the largest and deepest ocean in the world, covering approximately 155.6 million square kilometers and accounting for about one-third of Earth’s surface. It stretches from the Americas to Asia and Australia, hosting diverse ecosystems and major trade routes. Its vast size and depth make it a critical component of global climate and geography. Options A (Atlantic), C (Indian), and D (Arctic) are incorrect, as the Pacific surpasses them in both area and volume.