The answer is parallelism.
The subject of the sentence is her sketches. Also at the beginning of the list it says their unusual perspective so you have to continue using plural pronouns.
The sentence should read: Her sketches are unusual because of their unusual perspective, radical use of color, and their unexpected subjects.
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 central theme is described through this sentence.
B. "Baissac’s goal ... resistance groups."
This statement provides the agent’s motive and the way she enacted the task provided. However, that does not completely cover everything in the passage.
C. "Baissac did ... her tasks."
Significant work is not specific, and Normandy and traveling by a bicycle are smaller and irrelevant details, not the big picture that should be concluded from this passage.
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.
Answer:
what this i can't understand
I think the correct answer from the choices listed above is option C. Communication is considered ethical if it is relevant to the topic of discussion. Good communication is the use of the proper words for the given topic. Hope this answers the question.