What elements are involved in the chemical equation of photosynthesis?

Photosynthesis is a sequence of chemical reactions which brings out glucose. Glucose is a compound which the plant utilizes as food. By this, plants use the light coming from the Sun to create their own food. Moreover, the radiant energy coming from the Sun is thereafter changed into chemical energy in the glucose molecules. Furthermore, photosynthesis includes three elements. These elements are  oxygen, hydrogen, and carbon. Additionally, the products of photosynthesis are glucose and oxygen.

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.