Answer : Option B) proving a theory and writing a new scientific law.
Explanation : The steps of scientific investigations includes;
- Make an Observation. 
 - Form a Question. 
 - Form a Hypothesis. 
 - Conduct an Experiment. 
 - Analyze the Data and 
 - Draw a Conclusion.
 
So, this does not includes that you are proving a theory or writing a new scientific law of your own.