Correct ans is (A).
Photosynthesis is the procedure that 'produces sustenance' in green plants and other photosynthetic life forms (e.g. green growth) Photosynthesis happens in the green parts of plants – generally in takes off.
Chlorophyll (found in the chloroplasts) retains light energy and it is utilized to change over carbon dioxide and water into glucose. Oxygen is created as a result.
The word condition for photosynthesis:
Carbon dioxide + Water → Glucose + Oxygen