Answer: Occam's Razor
Explanation: It is a scientific and philosophical principle that proposes that, among hypotheses formulated on the same evidence, it is more rational to believe in the simplest. In other words, given several explanations for a problem, the simplest one tends to be the correct one.
Occam's Razor is a methodological principle, not a law that tells what is true and what is not. That is, it does not suggest that the simplest explanations are always true and that the most complex should be refuted in any given situation.