Law of Parsimony is also known as Occam's Razor and advocates choosing the simplest explanation with the fewest assumptions.

• A. Law of Complexity
• B. Law of Economy
• C. Law of Entropy
• D. Law of Variation

Answer: (B)

The main idea being tested is parsimony—the preference for the simplest explanation that accounts for the evidence, with the fewest assumptions. This is the principle behind Occam’s Razor: when multiple explanations fit the observations, the one that is most economical in its assumptions is usually best.

The best match is the Law of Economy because it speaks to using the simplest, most economical explanation for a behavior or phenomenon, rather than introducing unnecessary complexity. In practice, this means starting with a straightforward hypothesis and minimal variables, and only adding complexity if the simpler explanation fails to account for the data.

The other options don’t fit this idea. The Law of Complexity would push toward more elaborate explanations, which contradicts parsimony. The Law of Entropy concerns disorder and energy distribution rather than how we choose explanations. The Law of Variation isn’t a standard principle about preferring simple explanations, so it doesn’t capture the idea conveyed by Occam’s Razor.