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From the earliest times, the complications inherent in deciphering the movements of planets in the night sky must have seemed a curse to baffled astronomers. In the long run, though, they proved a blessing to the development of cosmology, the study of the physical universe. Had the celestial motions been simple, it might have been possible to explain them solely in terms of the simple, poetic tales that had characterized the early cosmologies. Instead, these motions proved to be so intricate and subtle that astronomers could not predict them accurately without eventually coming to terms with the physical reality of how and where the Sun, Moon, and planets actually move in real, three-dimensional space.

The passage indicates that ancient astronomers were 'baffled' because:

Rationale

They could not reliably predict observable celestial phenomena.

Ancient astronomers faced challenges in accurately predicting celestial events, which created confusion and intrigue in their studies of the cosmos. This unpredictability often led them to be 'baffled' by the patterns and movements they observed in the night sky.

A (Their observations disproved the poetic tales of early cosmologies) YOUR ANSWER

While early astronomical observations may have contradicted established myths or poetic narratives about the cosmos, this was not the primary reason for their confusion. The passage does not highlight the clash between observation and mythology as a source of bafflement; rather, it focuses on the unpredictability of celestial phenomena.

B (They lacked the mathematical sophistication needed to calculate astronomical distances) YOUR ANSWER

Although the mathematical tools of ancient astronomers were limited compared to modern standards, the passage does not suggest that this lack of sophistication was the direct cause of their bafflement. Instead, their confusion arose from the inability to predict celestial events, not merely from a deficiency in mathematical skills.

C (Their theories of planetary movements were more complicated than the movements themselves) YOUR ANSWER

The passage does not imply that their theories were overly complex compared to the actual movements of celestial bodies. Instead, it emphasizes the challenge of making reliable predictions, which points to the unpredictability of celestial phenomena rather than the complexity of their theories.

Conclusion

The passage underscores that ancient astronomers were perplexed due to their inability to consistently predict observable celestial phenomena. This unpredictability was a significant source of confusion, impacting their understanding of the cosmos and how they approached their studies. The focus on reliable predictions reflects a crucial aspect of their challenges, distinguishing it from other potential sources of bafflement.

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