Academic Writing Directions: Use Your Knowledge of Writing, Editing, and the Conventions of the Conventions

Academic Writing Directions:
Use your knowledge of writing, editing, and the conventions of grammar to answer the following questions.
Which of the following would not be considered reliable evidence for an argument essay?​

A) ​quotation from an expert
B) ​personal opinion
C) ​verifiable statistics
D) ​all of the above