Along with most ancient Greek philosophers, Ptolemy believed that the earth was at the center of the universe. Against this ancient and long-lasting tradition, Copernicus asserted the notion that the sun was at the center of the solar system. Thomas Kuhn would call this an example of:.A) a paradigm shift, as it challenged the existing paradigm of the day. B) how normative science triumphs over biased science. C) a normal scientific discovery, because it gathered new and useful information. D) the power of facts to correct errors.

A. a paradigm shift,as it challenged the existing paradigm of the day

Explanation:

A paradigm shift is a major change that occurs in the practices and the concepts of how something works.

Since Ptolemy believed that the earth was at the center of the universe while Copernicus asserted the notion that the sun was at the center of the solar system. Thomas Kuhn would call this an example of paradigm shift.

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  b.

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