I'm assuming that you are referencing factual questions, interpretation questions, and evaluation questions - also sometimes called level one, two, and three questions.
Level 1, or factual questions, are those that ask the reader to recall specific information from the text. Because these rely on memory rather than thinking, there is only one correct answer.
Samples - What is Doodle's real name? Who gives Doodle his nickname?
Level 2, or interpretation questions, are those that have more than one correct answer because it depends on the opinion of the reader concerning what the author meant. It relies more on thinking than memory, but a person would have had to read the text in order to answer the question.
Samples - Why is the caul mentioned during the story of Doodle's birth? How does it make him unique?
How the scarlet ibis a symbol for Doodle? Why does Doodle insist on burying it?
Level 3, or evaluation questions, are those that ask the reader to think about how he or she would behave in a cited situation, probably one similar to something that happens in the story. A person may not have had to read the text in order to answer these kinds of questions.
Samples: Would you treat your sibling the way Brother did in "The Scarlet Ibis"? Why or why not?
Would you have buried the bird from "The Scarlet Ibis"? Why or why not?