Question

What does it mean when someone has done multiple trials?
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OA. They have performed an experiment that can only be performed once.
OB.
They have performed an experiment once and reported their findings.
OC.
They have designed an investigation to answer a question.
OD.
They have performed a scientific experiment more than once.
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Answer 1

Answer:

I THINK THE ANSWER IS D. THEY HAVE PERFORMED A SCIENTIFIC EXPERIMENT MORE THAN ONCE.

Answer 2

They have performed an experiment once and reported their findings