Change the data to support the hypothesis. Perform the experiment without using control groups. Make observations and form another testable hypothesis. Perform the experiment using a larger number of variables.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: If an experiment results in data that do not support the hypothesis, what is the most likely step to take next?
Possibilities:
- Change the data to support the hypothesis.
- Perform the experiment without using control groups.
- Make observations and form another testable hypothesis.
- Perform the experiment using a larger number of variables.

Make observations and form another testable hypothesis.