Question

what is photosynthesis?
a chemical process, occurring without oxygen, by which glucose is broken down to create atp
a series of reactions, occurring in the presence of oxygen, by which glucose is broken down to create atp
the set of chemical reactions that occur in living organisms in order to maintain life
a series of reactions, occurring in the presence of sunlight, that creates glucose, or sugar

Explanation:

Photosynthesis is a process in plants (and some other organisms) where sunlight is used to convert carbon dioxide and water into glucose (sugar) and oxygen. The first option describes fermentation (anaerobic glucose breakdown). The second option describes aerobic respiration. The third option describes metabolism in general. The fourth option correctly aligns with the key aspect of photosynthesis - sunlight - and glucose production.

Answer:

A series of reactions, occurring in the presence of sunlight, that creates glucose, or sugar.