【单选题】'A sunny day' to 'a rainy one' in paragraph 4 metaphorically refers to______.
A.
a basically accurate social science field to 'a social science field full of inaccuracies'
B.
a rationality-oriented society to 'a society filled with irrational behaviors'
C.
a world cherishing evidence to 'a world neglecting evidence'
D.
a policy system based on systemic reviews to 'a policy system guided by biased reviews'