At which locations in the nuclear power plant would an accident most likely result in the release of fission products?

reactors

Explanation:

The heart of a nuclear plant is the reactor. In the reactor, all the processes take place. This involves the fusion and of the uranium rods and the subsequent reactions. In addition, the accident is normally as a result of a runway reaction meaning a reaction out of control. In this way the accidents take place at a nuclear station or plant. Secondary equipment include cooling towers and other areas in the close proximity.

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .