What event led Roald Dahl to become a pilot?

Roald Dahl's decision to become a pilot was significantly influenced by the outbreak of World War II. During this time, he joined the Royal Air Force (RAF) as a flying officer, where he trained to be a fighter pilot. The war created a demand for pilots, and many young men, including Dahl, felt compelled to serve their country in this capacity. This decision not only aligned with the national sentiment of the period but also matched Dahl's adventurous spirit.

The other options do not capture the motivation rooted in the historical context of the era in which Dahl lived. The outbreak of World War I occurred long before, and while a desire to explore remote regions or a personal challenge might have been motivating factors for some, they did not specifically drive Dahl’s choice to take up flying during the war. Thus, the context of World War II is pivotal in understanding why Dahl became a pilot.