A commercial glasshouse manager wants to optimize the yield of a tomato crop. The graph below shows the rate of photosynthesis of the crop under different environmental conditions:
Which of the following statements correctly interprets these data to maximize the efficiency and yield in the glasshouse?
At a light intensity of 111 arbitrary unit, temperature is the sole limiting factor because the rate of photosynthesis at 25∘C25^\circ\text{C}25∘C is higher than at 15∘C15^\circ\text{C}15∘C.
At a light intensity of 888 arbitrary units, light-dependent reactions are the primary rate-limiting step because the light intensity is high enough to saturate the reaction centers.
At a light intensity of 666 arbitrary units, raising the carbon dioxide concentration from 0.04%0.04\%0.04% to 0.15%0.15\%0.15% at 25∘C25^\circ\text{C}25∘C increases the rate of photosynthesis by 125%125\%125%, showing that carbon dioxide was the limiting factor.
To maximize the economic efficiency of the glasshouse, the manager should maintain a light intensity of 101010 arbitrary units, as the rate of photosynthesis continues to rise exponentially beyond 444 arbitrary units.