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A student grew aquatic plants in a tank and recorded the photosynthetic activity monthly for a year. The
graph of the data is in Figure 2. What conclusion is supported by the evidence?
a. Photosynthesis did not occur during the months of April through August
b. The rate of photosynthesis increased from June to December
c. The rate of photosynthesis was greatest during the months of May through July
d. Photosynthetic organisms died off during January through June.