The Atlantic Cod Population Decreased Dramatically During the 1900s Due

The Atlantic cod population decreased dramatically during the 1900s due to overfishing. What conservation measure, presently being applied, is most likely to help this fish population recover?

A) Fertilizing the ocean with raw sewage to cause eutrophication, thus increasing productivity
B) Establishing marine reserves in the area that prohibit fishing until stocks recover
C) Spreading silt in the water to reduce UV radiation damage to sensitive cod eggs
D) Encouraging selective fishing on haddock, turbot, and other species that compete with cod for food
E) Putting a bounty on sharks and tuna in the area that would otherwise eat the cod