Answer: Option C. photosynthesis
Explanation:
Photosynthesis is the process by which plants make there own food in the presence of sunlight by utilizing carbon-dioxide and water and produce energy in the form of glucose.
The photosynthesis process takes place in two sequential stages called light dependent reactions and light-independent reactions. In light dependent reaction light energy is converted to energy and stored in the form of ATP and in light-independent reactions ATP and NADPH, are utilised and produces carbohydrates from carbon dioxide.
In the Light-Independent Process, plants absorb carbon dioxide and addition of hydrogen takes place to form carbohydrates and the process called carbon fixation.
Carbon dioxide combines with ribulose 1,5-biphosphate (RuBP) and each molecule gets break down to form two glycerate 3-phosphate (GP) molecules.
Hence, photosynthesis is the process in which carbon gases are introduced into the atmosphere while carbon gases are absorbed from atmosphere.
