Randy Meets a Californian Who Grows His Own Vegetables and Refuses

Randy meets a Californian who grows his own vegetables and refuses to eat nonorganic food. Randy concludes that Californians are overzealous about nutrition. This type of error illustrates the importance of which critical thinking guideline?

A) Don't oversimplify.
B) Tolerate uncertainty.
C) Avoid emotional reasoning.
D) Examine the evidence.