Question

what carbohydrate is produced by primary producers using photosynthesis? glycogen maltose glucose

Explanation:

Primary producers (like plants) perform photosynthesis, and the main carbohydrate produced is glucose. Glycogen is an animal storage carbohydrate, and maltose is a disaccharide formed from glucose, not the direct product of photosynthesis.

Answer:

glucose (the option labeled "glucose" in the choices)