During photosynthesis, one molecule of glucose (C₆H₁₂O₆) is formed from carbon dioxide and water. The process can be summarized by the equation:
\[ 6 \text{CO}_2 + 6 \text{H}_2\text{O} \rightarrow \text{C}6\text{H}{12}\text{O}_6 + 6 \text{O}_2 \]
This equation shows that 6 molecules of water (H₂O) are used in the production of 1 molecule of glucose. Therefore, the number of water molecules recycled when one molecule of glucose is created during photosynthesis is 6.
So the correct answer from your options is 6.