Answer:
Option c) Hexose sugar
Explanation:
The Calvin cycle is carried out in three stages:
The carbon dioxide molecule reacts with 1,5-bisphosphate and ribulose leading to the formation of an unstable compound of six-carbon, which is further rapidly hydrolyzed to generate two 3-phosphoglycerate molecules.
Other ways of synthesizing hexose sugars by reducing Carbon dioxide in the photosynthetic world is the reverse mode of citric acid cycle running.