to test a hypothesis to form a theory to produce a scientific paper to change previous results
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Investigations were performed to test several methods of keeping petals from falling off flowers that had been cut. Which is the most likely reason for this investigation?
Possibilities:
- to test a hypothesis
- to form a theory
- to produce a scientific paper
- to change previous results

to test a hypothesis