The final product of the calvin cycle is:
a. rubisco
b. atp
c. co2
d. g3p

The correct answer will be option-D

Explanation:

Calvin cycle or C₃ cycle is a set of a cyclic reaction which takes place in the light-independent reactions of photosynthesis.  Calvin cycle proceeds in three phases: carboxylation, reduction and regeneration.

The cycle produces two molecules of Glyceraldehyde-3-phosphate (G3P) molecule during the reductional step of the cycle. Out of these two molecules, one G3P undergo for the regeneration of RuBP and one G3P undergo for the formation of a glucose molecule.

Thus, option-D is the correct answer.