Correct answer: C). CAM
The most common types of carbon fixation that occurs in most of the plants are C3. About 85% of plant species are C3. It converts carbon dioxide and ribulose bisphosphate (RuBP) into the two molecules of phosphoglycerate. The whole process of energy capture to sugar production takes place in the chloroplast.
The most of the plant are C3 plants are wheat, rice, oats, barley, soybeans, tobacco, spinach etc. The C3 plants have one disadvantage, in hot and dry conditions their photosynthetic efficiency decreases due to photo-respiration