Our ability to draw appropriate conclusions based on the results of an experiment depends most of all on the

Question

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Internal validity is the degree to which an experiment is free from systematic error or confounds and is therefore able to accurately establish the cause-and-effect relationship between the independent and dependent variables. Without internal validity, it is difficult to make valid conclusions based on experimental results. The other options (A, C, D) may also be important, but do not relate directly to the ability to draw appropriate conclusions.

Our Ability to Draw Appropriate Conclusions Based on the Results