This is an example of irony
The answer is D. As a spy in Normandy, Baissac performed a variety of important and sometimes dangerous task in order to get in the way of German troops.
Because thats basically what there saying in the paragraph or short excerpt There explaining that she did alot of dangerous things just to get in the way of German troops (as a spy)
hope this helps.
C
Vanity is the pride or admiration about oneself or one's achievements. This is reflected in the third sentence.
