What changes occurred as the number of concentration camp prisoners dramatically increased?

The changes that occured to the concentration camps as the populations of them increased meant worse conditions. The food rations were cut into thirds. They were more over crowded and more prone to diseases and death. These conditions lead up to the final solution because the Germans could no longer hold all these prisoners with the space they had to occupy them so they would have to build more camps if they wanted the conditions to be fair.

Explanation:

the answer is a, salt plain