The people that Hersey focuses on can best be described as

government officials

ordinary people

heroic soldiers

wealthy civilians

The ordinary people

Explanation:

John Hersey's who has journalist background provided him the skill necessary to bring raw and clear facts of the aftermath of the bombing to the forefront of thought around the world.

He is able to provide the facts of the aftermath in a way that is both driven and compelling by the very specific details that shaped the lives of those people involved in Hiroshima after the bombing.

The reader is provided with the details of the episodes of radiation sickness, the immediate physical injuries, the keloid scars that developed, and the mental distress suffered by the victims.