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English, 03.06.2020 23:57 Lscifa

For an experiment to produce useful data, what must happen? A. It must be repeated several times.
B. It must be published in a famous journal.
C. It must be performed by a famous scientist.
D. It must prove a hypothesis correct.
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For an experiment to produce useful data, what must happen? A. It must be repeated several times.
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