What television series follows the survivors of Oceanic Flight 815?

The television series that follows the survivors of Oceanic Flight 815 is "Lost." This drama explores the lives of the passengers who survive a plane crash on a mysterious island, developing complex character arcs while they confront various challenges, including the island's unique environment and the secrets it holds. The narrative intricately weaves together past and present timelines, revealing the characters' backstories and their connections to one another, which contributes significantly to the show's depth and engagement.

The other options do not pertain to this theme. "Survivor" is a reality competition series focused on outwitting, outplaying, and outlasting contestants in various challenges on a deserted location. "The Walking Dead" and "Fear the Walking Dead" are both part of a franchise centered around the zombie apocalypse, which is unrelated to the specific premise of "Lost."