When it comes to the input of photosynthesis, oxygen is not required. The correct option would, thus, be D
During photosynthesis, carbohydrates are produced from inorganic materials input such as carbon dioxide and water. The reaction takes place with the necessity of the presence of radiant energy.
The process of photosynthesis consists of a series of reactions, but the summary is given as the equation below:
[tex]6CO_2 + 6H_2O + light ---> C_6H_1_2O_6 + 6O_2[/tex]
From the reaction, one can see that oxygen is not one of the starting materials. However, oxygen gas is liberated as a by-product.
More on photosynthesis can be found here: https://brainly.com/question/1388366
