In "A Cub Pilot," the author says: "Judgment is a matter of brains, and a man must start with a good stock of that article, or he will never succeed as a pilot." What does the author mean?
a. Intelligence is more important than good judgment.
b. Success as a pilot depends only on judgment.
c. Pilots need a good stock of material possessions.
d. A person who lacks good judgment cannot be a good pilot.