to be able to compare results to increase the validity of the data to form the best conclusion to ensure the procedure is followed
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Why is it important to have a large sample size in an investigation?
Possibilities:
- to be able to compare results
- to increase the validity of the data
- to form the best conclusion
- to ensure the procedure is followed

to increase the validity of the data