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Problem 3 - Entrance Test

The process of photosynthesis, by which plants convert light energy into chemical energy, involves a complex series of biochemical reactions. Chlorophyll, the green pigment found in plant cells, plays a pivotal role by absorbing sunlight, initiating the energy conversion.

Correct: B

The paragraph provides factual information and describes a scientific process (photosynthesis) in a neutral, explanatory tone. This indicates that the author's primary purpose is to inform the reader about the topic.