Ascientist conducted one trial of an experiment and got unexpected results. how can the scientist increase confidence in the results?

by repeating the experiment several times
by changing the experimental procedure
by asking other scientists what they think about the results
by modifying the results so they are close to the expected results

The correct answer is that is by repeated the experiment many times.

Explanation:

In the given case, as the scientist performed one trial of an experiment and received an unexpected outcome, thus, there is a need to repeat the experiment and to observe that whether he is getting the similar result or not. If the obtained result is still similar and is not matching the expectations of the scientist, then there is a need to repeat the experiment again and to discuss the outcomes with some other scientists. If the result comes different, then one should look for the cause of the error.

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explanation:

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