Question

name the gas that is produced during photosynthesis helium oxygen carbon dioxide water vapor

Explanation:

Photosynthesis is a process where plants use sunlight, carbon dioxide ($CO_2$), and water ($H_2O$) to produce glucose ($C_6H_{12}O_6$) and oxygen ($O_2$). The chemical equation for photosynthesis is $6CO_2 + 6H_2O \xrightarrow{light} C_6H_{12}O_6+6O_2$. Helium is an inert gas not involved in photosynthesis. Carbon dioxide is a reactant (not a product) in photosynthesis. Water vapor is not a main product of the photosynthesis reaction.

Answer:

oxygen