Answer:
The correct answer will be option-III
Step-by-step explanation:
A scientific person who studies the natural events through the scientific method does not believe in personal opinions but on the testable facts.
In the given question, when Granny claims that her pie is nutritious which represent a personal opinion, then the scientific person will have to follow the scientific method and therefore will perform the experiments to test the hypothesis based on the personal opinion. Then he will analyse the results to check if the obtained results support the opinion or not.
Thus, option-III is the correct answer.