Salmon are predators to shrimp.
This makes sense because a predator is an animal that hunts another animal to survive. Since salmon feed on shrimp, they must be a predator.
Additionally, we can eliminate the other possibilities by process of elimination:
-B is incorrect as a parasite is an organism that lives inside of another organism. Since salmon do not live inside of shrimp, this doesn't make sense.
-C is incorrect because a host is an organism that a parasite lives inside of. Since shrimp do not live inside of salmon, this also can be removed.
-D is incorrect because prey is an animal that is eaten by another animal. Since shrimp to not eat salmon, this can also be eliminated.
Therefore, A is our answer.
Hope this helps! :)
