Final answer:
Option (d), When Percy first meets Hades in Percy Jackson's story, no historical figures are mentioned. The series is known for blending modern settings with ancient Greek mythology rather than historical figures.
Step-by-step explanation:
The question refers to the moment when Percy first meets Hades in the Percy Jackson series. The correct answer is d) No historical figures are mentioned. In Rick Riordan's Percy Jackson stories, although Percy encounters many figures from Greek mythology, historical figures like Julius Caesar, Cleopatra, George Washington, Abraham Lincoln, Napoleon Bonaparte, and Joan of Arc are not directly referenced in his meeting with Hades.
Instead, the Percy Jackson series blends modern settings with ancient mythological elements, focusing on the adventures of Percy and his friends as they interact with gods and creatures from Greek legends.