The area of the ocean that produces the largest standing stock of commercial fish is in the

The answer is the continental shelf. The reason why the answer is continental shelf is because the continental shelf is relatively shallow where in it makes fishermen to be able to consume commercial fishes because it is only relatively shallow which is not that deep, making it easier for them to catch. It is where these fishes resides having fishermen have the idea where the largest stock of commercial fish is found.

The answer i think is d