Step 1: Recall Merton’s CUDOS norms. Robert K. Merton identified four institutional norms of science: Communism (communalism of knowledge), Universalism (truth is independent of the knower), Disinterestedness (impersonal, non-selfish pursuit), and O\!S = Organized Skepticism (systematic critical scrutiny).
Step 2: Match the blank. The missing fourth is Organized skepticism. Other options do not belong to the canonical set.
Final Answer: (A) Organized skepticism