Final answer:
The word 'conspicuous' means something that stands out. Therefore, the correct answer is option a) something that stands out.
Step-by-step explanation:
The best meaning of 'conspicuous' as it is used in this passage is something that stands out. In the context of the passage, the word 'conspicuous' is used to describe the difference of the books in the room compared to Jonas' own dwelling. The use of 'conspicuous' emphasizes that the books were very noticeable and caught Jonas' attention due to their large number and shiny titles.