The suffix -tion is used to form

nouns
adjectives
verbs
adverbs

The answer is A. nouns. I truly hoped this helped with all your homework and i will try to help with any other questions you have in the future!

expository writing is one of the most common types of writing.

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.