The rate of oxygen production is greatest in section M is the statement which supports the data in the graph
Step-by-step explanation:
The data in the graph which plotted the rate of photosynthesis against temperature gradient shows that point M represents the optimal temperature where the rate of photosynthesis was the highest.
This was because the enzymes that take part in photosynthesis are efficient with an optimal rise in temperature leading to an increased rate of photosynthesis which in turn results in increased oxygen production.
When the temperature is lower than optimal, the enzymes are inactive or less active resulting lower rate of photosynthesis.
At the same time, when the temperature is increased beyond the optimal temperature, they get denatured or destroyed and the rate of photosynthesis drops down.