How many carbon atoms combine in the photosynthesis reaction?(1 point)

In the photosynthesis reaction, 6 carbon atoms are involved. The overall equation for photosynthesis is:

[ 6 , \text{CO}_2 + 6 , \text{H}_2\text{O} \rightarrow \text{C}6\text{H}{12}\text{O}_6 + 6 , \text{O}_2 ]

This indicates that 6 molecules of carbon dioxide (( \text{CO}_2 )) are used to produce one molecule of glucose (( \text{C}6\text{H}{12}\text{O}_6 )), which contains 6 carbon atoms.

So, the correct answer is 6.