Question

what is the definition of a scientific theory?

a proposed explanation for an occurrence based on available data, observations, or evidence.
a well supported explanation of why a phenomenon occurs.
a scientifically acknowledged principle that has been confirmed by repeated experimental observations.
the final outcome of an experiment completed one time.

Explanation:

Analyze the definition of a scientific theory

A scientific theory is a broad, well-substantiated explanation of some aspect of the natural world that is acquired through the Scientific Method and repeatedly tested and confirmed through observation and experimentation. It explains why or how a natural phenomenon occurs.

Evaluate the first option

"A proposed explanation for an occurrence based on available data, observations, or evidence."
This describes a hypothesis, which is a tentative, testable explanation rather than a thoroughly supported theory.

Evaluate the second option

"A well supported explanation of why a phenomenon occurs."
This matches the definition of a scientific theory. It is an explanation (explaining "why") that has been extensively tested and is supported by a vast body of evidence.

Evaluate the third option

"A scientifically acknowledged principle that has been confirmed by repeated experimental observations."
This describes a scientific law, which describes what happens under certain conditions (often mathematically), rather than explaining why it happens.

Evaluate the fourth option

"The final outcome of an experiment completed one time."
A single experimental outcome is simply a data point or result, not a scientific theory, which requires extensive verification.

Answer:

• (A) A proposed explanation for an occurrence based on available data, observations, or evidence.
• (B) A well supported explanation of why a phenomenon occurs. (Correct answer)
• (C) A scientifically acknowledged principle that has been confirmed by repeated experimental observations.
• (D) The final outcome of an experiment completed one time.