Question: The Steller sea lion population has been decreasing in parts of Alaska. New evidence suggests that Steller sea lions need herring as a part of their diet in order to survive. Pollock, another type of fish, also feed on herring. Which would most likely help the Steller sea lion population to increase?

  Options: 
 A. increasing the number of pollock
 B. changing the diet of the sea lions
 C. improving the habitats of herring
 D. changing the location of the sea lions 
Answer: C