Does anyone know if the textbook with multiple choice questions referenced in this article is the standart textbook for fourth graders in Saudi Arabia or is it just a textbook used in Wahhabi religious schools? What percentage of fourth graders in Saudi Arabia use this textbook? How does Applebaum know that b is not the correct answer?

Are Jewish and christian citizens of Saudi Arabia allowed to practice their religion with out any state interference? Are they granted full citizenship?