The statement "Nature thus exhibited rationality and was not mere blind chaos and uncertainty" suggests that
Explanation:
The third paragraph is where the author emphasizes that the real significance of Newton’s achievement lay in his having established the presence of law and order at least in one important realm of nature, namely, in the motions of heavenly bodies. That is, he provided a mathematical basis to explain physical phenomena (option 3) and that conformity gives proof that there is some rational basis about natural phenomena. Options 1 and 2 can be refuted and option 4 does not apply (it is irrelevant).
Hence, the correct answer is option 3.
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