Which of the following expresses the photosynthesis formula in words?

• A. Water + Carbon Dioxide + Light -> Sugar + Oxygen
• B. Oxygen + Sugar -> Water + Carbon Dioxide + Light
• C. Sugar + Water -> Oxygen + Carbon Dioxide + Light
• D. Light + Oxygen -> Sugar + Water + Carbon Dioxide

Answer: (A)

Photosynthesis uses light energy to convert water and carbon dioxide into sugar (glucose) and oxygen. In words, the overall equation is water + carbon dioxide + light energy -> sugar + oxygen. The correct choice matches this exactly: it lists water and carbon dioxide as the starting materials and sugar and oxygen as the products, with light providing the energy for the reaction. The other expressions either put light on the wrong side, omit light energy, or swap reactants and products, so they don’t describe the process accurately.