I believe the answer is A) Staling and D) Preventing
The answer would be :internal or those with internal locus of control
This kind of people tend to have positive affectivity because they tend to believe that they can control the outcome
Someone without internal locus control, tend to blame everything around them for everything that went wrong which will lead to negative affectivity.
The war that was being waged against Germany was mostly an economic one. Limited opportunities in terms of trading with other nations, partial blockade against their exports, lesser chances of becoming loans for the Germant government all substantially worsened the situation of Germany in the times of the armistice.