Anecessity that verifies that a persuasive text writer's opinion is correct is called

Evidence

Explanation:

Evidence is literary device which is seen in various essays and theses which is in a form of paraphrase and quotations. the aim of this paraphrase or quotations that is used as evidence is to persuade readers about the power of the argument of that essay or text.

It based on facts that can assist the reader to reach a conclusion and have their own opinions about what is written. Evidence is found in research work and is quoted in essays and also thesis and is paraphrase by the write

When someone has presented an argument giving an evidence is crucial to make the argument valid so evidence aims to persuade and convince readers.

answer; ///he could not explain why the continents drifted;