Answer:
The total war effort endangered civilians because it led enemies to attack towns, cities, and factories to damage the war effort. Total war is a concept of warfare that involves the mobilization of all resources, including civilians, to achieve the war effort's objectives. This means that all aspects of society, including the economy, industry, and population, are geared towards the war effort. As a result, enemies may target civilians and civilian infrastructure to disrupt the war effort, and this can lead to significant harm and suffering for non-combatants. While the other options listed may also be true in some cases, they are not the primary reason why total war endangers civilians.