Final answer:
Sunlight can penetrate the ocean's surface to a maximum depth of 200 meters during photosynthesis.
Step-by-step explanation:
The depth to which sunlight can penetrate in the ocean is determined by different zones.
The photic zone is where sunlight can penetrate for photosynthesis to occur and it extends to a maximum depth of 200 meters below the ocean's surface. Depths greater than 200 meters are referred to as the aphotic zone where light cannot penetrate.
Therefore, the correct answer is option c. 10 meters which is the closest to the correct depth of the photic zone.