What concept requires a hypothesis to be the simplest explanation that adequately accounts for observations without unnecessary complexity?

Answer

Parsimonious.

The requirement for parsimony means the hypothesis should be the simplest explanation sufficient to cover the observations without introducing extraneous complexity, ensuring clarity for testing.

What concept requires a hypothesis to be the simplest explanation that adequately accounts for observations without unnecessary complexity?
Definitionsciencetheorymethodhypothesis