Answer
Option D - Photosynthesis
Explanation
There are many ways water gets oxygen. Oxygen from the air disintegrates and blends into the water's surface. Green growth and submerged grasses discharge oxygen amid photosynthesis. Marine plants utilize broke up carbon dioxide, daylight, and water to make sugars through the procedure of photosynthesis. This procedure discharges oxygen into the water. Every marine life form uses oxygen for breath, which discharges vitality from sugars and has carbon dioxide and water as results.
