to use up all the materials to give all the students the chance to participate to collect more data to fit the hypothesis to determine if the results are similar
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Why is it important to repeat an experiment several times?
Possibilities:
- to use up all the materials
- to give all the students the chance to participate
- to collect more data to fit the hypothesis
- to determine if the results are similar

to determine if the results are similar