Question

multiple-choice question
which is true about a scientific theory?
it is a guess, hunch, or opinion about something
it is supported by evidence, fortified by facts, and has been tested repeatedly
it is a testable idea
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Explanation:

A scientific theory is not just a guess or a testable idea. A theory is well - supported by evidence, fortified by facts, and has undergone repeated testing. A guess or hunch is more like a hypothesis. A testable idea is a hypothesis. But a theory is at a higher level of scientific understanding.

Answer:

It is supported by evidence, fortified by facts, and has been tested repeatedly.