National Academy of Sports Medicine (NASM) Certified Nutrition Coach (CNC) Practice Exam

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What statement accurately describes a scientific theory?

A scientific theory is a hypothesis

A scientific theory is just a guess

A scientific theory is a well-substantiated explanation

A scientific theory is a well-substantiated explanation that is based on a body of evidence and has been repeatedly tested and confirmed through observation and experimentation. This definition highlights the rigorous process that leads to the formulation of a scientific theory, which goes beyond mere speculation or untested ideas. Unlike a hypothesis, which is an initial educated guess that can be tested, a scientific theory encompasses a broader understanding of the phenomena it explains, having undergone extensive validation.

The development of a scientific theory often involves extensive research, critical peer review, and a consensus in the scientific community, making it a foundational aspect of scientific knowledge. This process underscores its reliability and importance in advancing understanding within the scientific field. A well-substantiated explanation carries weight in the context of scientific inquiry, as it helps to unify various observations and experiments under a cohesive framework.

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A scientific theory is unnecessary in research

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