The author of this passage is likely to agree with which of the following?
(2007)
Answer option (a) cannot be correct because it's mentioned in the passage in the last paragraph, 2nd last line that paradigms can define only a part of normal science. Amongst all other options, (d) sounds the most perfect answer choice because in the last paragraph the author has made it clear that paradigms are more important and that they are a general representation of rules and beliefs of a scientific tradition.