This type of text attempts to convince a reader to adopt a particular opinion or course of action

The answer is Persuasive text.

 Explanation:

The aim of a persuasive text is to convince the reader to agree with the author's point of view.  

A persuasive text needs to include a statement of positions, arguments, and assurance of the initial statement.  The statement of positions discloses the author's position and the argument. The arguments are the supporting evidence to persuade. And, the assurance of the initial statement is the repetition in a summary of the arguments already given.

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.