A heading is similar to a caption, a line below a photograph that briefly explains it. Headings show up at the top of paragraphs, chapters, or pages, and they give you an idea of what the subject is. You might write a heading for each chapter of your novel, or on each page of your Spanish club newsletter.
Answer:
My best guess would be it is Kiches external conflict
They would be put into room to be sorted between “healthy and able to work” and “undesirable for work”. Those who were healthy and able, would be taken to another room to possibly shower and get their uniforms. Those who were undesired would be taken to gas chambers or would get shot.