21. Fill the gap This principle of logic states that, if all other aspects are equal, the simplest theory is preferred over other theories involving additional factors. This is also called __

The correct answer is: Occam's Razor.<br /><br />Explanation: Occam's Razor is a principle of logic that suggests that, when faced with competing hypotheses, one should select the solution with the fewest assumptions. In other words, the simplest explanation is usually the best one. This principle is often used in scientific inquiry and problem-solving to guide the selection of the most plausible explanation or theory.