A) "It is sometimes difficult to tell exactly what gives birth to an idea." B) "I went to a steamship company's office that day and made a selection of time tables." C) "The idea of a trip around the world pleased me and I added: 'If I could do it as quickly as Phileas Fogg did, I should go.'" D) "But ideas did not come that day and three o'clock in the morning found me weary and with an aching head tossing about in my bed."
I believe the answer is D.
Hope I helped,
Ms. Weasley
