What are the different stages of the Calvin cycle?

Explanation

The correct answer is Carbon fixation,Reduction,and RUBP regeneration. The Calvin cycle involves three crucial stages: Carbon fixation, where CO2 is attached to a 5-carbon sugar; Reduction, where ATP and NADPH are used to transform 3-phosphoglycerate into G3P; and RUBP regeneration, where the cycle's initial 5-carbon molecule is regenerated. Option A only mentions Carbon fixation, and Option C only mentions Reduction, making them incomplete. RUBP regeneration is essential for the cycle's continuity; thus, combining all these steps reflects the full cycle.