Final answer:
The step in the scientific method where a scientist reevaluates a hypothesis after experimental results do not support it is 'Step 4: Accept or modify the hypothesis'. This could result in rejecting, modifying, or formulating a new hypothesis for further experimentation.
Step-by-step explanation:
When a scientist analyzes the results of an experiment and finds that they do not support her initial hypothesis, this leads her to reevaluate and possibly modify the hypothesis. This is part of the scientific method, which includes several defined steps in understanding and studying phenomena. The specific step in the scientific method where the scientist decides whether to accept or modify the hypothesis is known as Step 4: Accept or modify the hypothesis. If the hypothesis is supported by the data, the scientist can move on to further testing; if not, as in this case, it might be rejected or modified, which often leads to formulating a new hypothesis and conducting further experiments.