Which is the best example of a plot's resolution?
a. mike always tried to be friendly to his customers and coworkers.
b. mike was so grateful that his fundraiser to save the mall worked. the mall was saved!
c. mike looked for jobs all over town. he thought he might find a job at the mall.
d. mike worked hard at his job in the mall. one day he learned they were closing the mall.

halibut, flounder, tuna, and trout are all fish. so your first answer is 1.) fish. and since fish is edible, your next answer would be 3). edible

to describe those fishes more thoroughly, some of those fishes live in fresh water, and some of the fishes live in salt water, and that is not a thing that they all have in common. the question is asking what is common with all of the fish, so answer choices 2). fresh water and 4). salt water are not right.

you need need more details so we can understand what your asking us.