Answer: B) Whales are threatening the livelihood of fisherman by eating too many fish.
Step-by-step explanation:
Whaling is a process of hunting whales for obtaining their meat and oil. Prohibition of whales is important so as to restrict the loss of population of whales through hunting which could be responsible for their extinction.
B) Whales are threatening the livelihood of fisherman by eating too many fish. is the correct option. This is because of the fact that whaling is prohibited to restrict the human activity of hunting not to restrict the natural feeding activity of the whale population.