Since 1950 the Commercial Fishing Industry Has Applied Continuously Improving

Since 1950 the commercial fishing industry has applied continuously improving technologies for harvesting marine fish. What has been the effect of improved fishing efficiencies on ocean communities?

A) No substantial change has occurred; the oceans are simply too big for humans to have much of an impact.
B) Generally beneficial; as top predatory fish have been removed the biodiversity of many oceanic communities has actually expanded.
C) Quite disruptive; fishing has significantly altered the food webs of many ocean communities.
D) Generally beneficial; the selective removal of certain large carnivorous fish has led to an increase in the number of harvestable fish.