Question

which phrase defines a law?
a possible explanation or answer to a
scientific question that is based on prior
knowledge or research and is testable
a statement of fact that is generally accepted
to be true and universal because it has
always been observed to be true.
a hypothesis or group of related hypotheses
that can be accepted as true based on
repeated experimentation with similar results

Explanation:

To determine the correct definition of a scientific law, we analyze each option:

• The first option describes a hypothesis (a testable explanation for a scientific question).
• The second option matches the definition of a scientific law: a statement of fact that is generally accepted as true and universal because it has always been observed to be true (e.g., the law of gravity, Newton's laws of motion).
• The third option describes a theory (a well - supported explanation based on repeated experimentation, which is more comprehensive than a law).

Answer:

B. A statement of fact that is generally accepted to be true and universal because it has always been observed to be true.