The answer is b. They are currently overfished
Overfishing occurs when more fish caught than the population can replace through natural reproductions. overfishing could lead to serious problems and destroy the balance of oceanic life.
Billions of people rely on fish for protein, and currently more than 85 % of the world fisheries has been overfished
To make matter worse, fisherman usually target a top predator such as tuna, this lead to the abundance of smaller marine species such as sardines and anchoves