question: How many meters deep does the photic zone extend?
distractor3: 900
distractor1: 400
distractor2: 100
correct_answer: 200
support: The photic zone extends to a maximum depth of 200 meters (656 feet) below the surface of the water. This is where enough sunlight penetrates for photosynthesis to occur. Algae and other photosynthetic organisms can make food and support food webs.