how does the clause "the only thing we have to fear is
par itself" suggest roosevelt's purpose for speaking?

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.

i had this on usatestprep and i put c; not 100% if it will   be correct if not i am sorry