The correct response is:
Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
In photosynthesis, energy from sunlight is used to convert carbon dioxide and water into glucose and oxygen, which requires significant energy input. Therefore, the activation energy for photosynthesis is higher compared to cellular respiration, which releases energy as glucose is broken down into carbon dioxide and water, thus having a lower activation energy.