Concept:This question tests the ability to arrange sentences into a logical paragraph about existentialism, focusing on its origin, core ideas, and emotional impact.
Explanation:Start with sentence Q because it introduces the topic—existentialist philosophers and their aim to understand the human condition in a meaningless world.
Next, sentence R gives the historical context: the movement arose as a response to the moral emptiness caused by the world wars.
Then sentence P explains a key belief of existentialism—individual freedom with its accompanying responsibility.
Finally, sentence S concludes by describing the emotional outcome of that radical freedom: anxiety and dread.
This order creates a clear flow from introduction to context to idea to consequence.
Answer:Option B: Q, R, P, S