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Answer:
A. to start over with a new experiment
Step-by-step explanation:
In general, scientists like to repeat experiments to ...
- validate the procedure
- validate the results
That is, they want to make sure that they see what other scientists see when they use the reported process for obtaining those results.
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Starting over with another experiment has nothing to do with the reason for making a replicable experiment.
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Additional comment
Quantum physics is teaching us that our world is formed by our consciousness. This sets the entire "scientific method" on its ear, virtually guaranteeing that the results you see are the results you expect to see. The "laws" of chemistry and physics bend to the will of consciousness in weird and wonderful ways.