What is the exposition of story a sound thunder?

The exposition of Ray Bradbury's short story "A Sound of Thunder" introduces the reader to the main character Eckels and his desire to time-travel.

- Time Safari, Inc., is a company that offers clients the opportunity to travel back in time and hunt dinosaurs.

- Eckles is anxious about the upcoming hunt and is given instructions by the safari leader Travis.

- The rules are explained, including staying on the Path and not touching anything.

- Travis introduces the other hunters, and they board the Time Machine.