If an experiment disproves a scientist's hypothesis, what should the scientist do next?

1. Develop a testable question.

2. Revise the hypothesis and try the experiment again.

3. Develop a theory based on the data gathered in the experiment.

4. Change the dependent variable.

Is it 2?

3 answers

I agree with 2, but not necessarily repeat the same experiment, but rather a revised one.
But there isn't a better option than 2, right?
So is 2 the correct answer?