You should begin gathering information for your biography or
outline
A. after you have written your beginning and
ending paragraphs.
B. while you are making a list of people to write
about.
C. after you have chosen the subject you are
going to write about.
D. after you have asked your friends what they
know about your subject.

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.