change the experiment. keep their opinions to themselves. find out what other scientists think about the results. repeat the experiment several times and compare results.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Scientists who disagree with the results of an experiment should
Possibilities:
- change the experiment.
- keep their opinions to themselves.
- find out what other scientists think about the results.
- repeat the experiment several times and compare results.

repeat the experiment several times and compare results.