What characteristic primarily explains the continental shelf’s high marine productivity and economic value?

💡 Explanation:

The continental shelf is the shallowest part of the ocean floor, which allows sufficient sunlight to penetrate the water column. This access to sunlight is crucial for photosynthesis by phytoplankton and marine plants, which forms the base of the food web and drives high primary productivity in the neritic zone. This biological richness results in significant economic value, particularly for fishing and resource extraction.