Answer:
D. Exposing a plant to a higher light intensity
Explanation:
Increase in light intensity serves to increase the rate of photosynthesis when other factors are present in adequate amount. It is due to the fact that the first phase of photosynthesis includes light dependents reactions that results in synthesis of ATP and NADPH in light dependent manner. These two products serve in dark phase of photosynthesis. Therefore, increase in light intensity increases the rate of photosynthesis.
