The diagram illustrates an experiment used to examine how increasing light intensity affects the rate of photosynthesis in an aquatic plant. The rate is determined by measuring how quickly bubbles are released by the plant. As light intensity rises, the bubble release rate rises and then levels off. Which statement explains why the bubble release rate levels off at high light intensities?
- ACarbon dioxide concentration becomes a limiting factor.
- BLight intensity becomes a limiting factor.
- COxygen availability becomes a limiting factor.
- DWater availability becomes a limiting factor.