After you have used context clues to determine the meaning of an unfamiliar word, you should a. think of an antonym for the unfamiliar word. b. replace the unfamiliar word with a synonym to see if the sentence makes sense. c. look up the unfamiliar word in a dictionary to check its meaning. d. continue reading.

You should..

B. replace the unfamiliar word with a synonym to see if the sentence makes sense.

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.