单选题 To ensure              results, the experiment was repeated multiple times under different conditions.

单选题 A reliable study must have its results verified to ensure their              .

单选题 His argument lacked              evidence, so the audience remained skeptical.

单选题 To ensure the accuracy of the data, the experimental results must be              in order to compare them with the original data.

单选题 The company needed to              an anonymous survey to get honest feedback from its employees.

单选题 A              large number of critics expressed their doubts about the legitimacy of the theory.

单选题 The researchers found a strong              between the two variables, suggesting a potential relationship.

单选题 Scientists often conduct experiments to              their hypotheses.