Step 1: Understand the central idea of the passage.
The passage emphasizes that the recognition of human ignorance is the greatest discovery of 20th-century science. This awareness is presented as a defining feature of humanity’s progress and curiosity.
Step 2: Evaluate the options.
- Option 1: Incorrect. The statement is philosophical but does not align directly with the conclusion drawn from the passage.
- Option 2: Incorrect. While it hints at the relationship between ignorance and scientific inquiry, it oversimplifies the connection.
- Option 3: Incorrect. This is partially true but fails to encapsulate the broader implication of awareness driving curiosity and progress.
- Option 4: Incorrect. The passage does not focus on invention as a direct outcome of ignorance.
- Option 5: Correct. The passage concludes that awareness of ignorance motivates humans to seek greater knowledge, marking their progress.
Final Answer: (5)