Read the excerpt from "lise marie de baissac."

in normandy, baissac pretended to be a refugee from paris living in the house of a schoolmaster. there, she to set up more resistance groups and organize sabotage actions. again traveling by bicycle, she maintained secret communications between groups and transported supplies. this was extremely dangerous work. often covering forty miles in a single day, she carried arms and explosives as well as information about targets. her actions, along with those of her colleagues, often delayed the arrival of german reinforcements to the front lines of battle.

which best describes the central idea of this paragraph?

a. when she lived in normandy, baissac assumed a different identity in order to complete important work while she lived there.
b. baissac’s goal was to get in the way of german troop movement, and she was often successful when she worked with resistance groups.
c. baissac did significant work as a spy when she lived in normandy, sometimes traveling by bicycle to complete her tasks.
d. as a spy in normandy, baissac performed a variety of important and sometimes dangerous tasks in order to get in the way of german troops.

Lise Marie J. de Baissac came from a French family. She was born in Mauritius and had British nationality. She was the superstar of the Special Operations Team at the time of WW-II. She was a dignified agent who, multiple times, risked her life in order to work in national spy operations. After the war seized, she was received numbers of gallantry prizes.

However, the reason after every option for its acceptance or nonacceptance as the answer is mentioned beneath each point. Anyhow, the correct answer is darkened.

A. "When she ... lived there."

This line only defines a specific detail about how the special agent survived through a fake name as a spy. No theme is described through this sentence.

B. "Baissac’s goal ... resistance groups."

This statement the agent’s motive and the way she enacted the task provided. Still, the complete idea is not expressed within the line.  

C. "Baissac did ... her tasks."

The writer is praising the efforts of Baissac in this sentence. He again writes how much hard work the agent did in order to achieve the national goals.

D. "As a ... German troops."

This is the statement that definitely defines the central idea of the excerpt. When we break this line into sections, we can see that it illustrates that she performed multiple essential tasks when appointed in Normandy. The phrase “sometimes dangerous tasks” describes the critical nature of the job she handled in there. And, also the opposition (German troops) is clearly mentioned in this sentence which helps to convey the idea very clearly.