In an experiment to study the effect of temperature on the rate of photosynthesis, a researcher collected data from several plant specimens placed in controlled environments at three different temperatures: 15°C, 25°C, and 35°C. The rate of photosynthesis was measured using oxygen production over a set duration. The recorded data is summarized in the following table:

Temperature (°C) | Rate of Photosynthesis (μmol O₂ produced/hour)
15 | 5
25 | 20
35 | 15

When analyzing this data, which of the following conclusions can the researcher make about the relationship between temperature and the rate of photosynthesis?