to validate results to achieve different results to disprove other scientists' results to obtain the same results a different way
I gave my students this multiple choice question: Which best explains why it is important to perform repeated trials of an experiment?

Only one answer is correct among these 4 choices:
- to validate results
- to achieve different results
- to disprove other scientists' results
- to obtain the same results a different way

Could you tell me which one is correct?

to validate results