Answer: Quantitative
Explanation:
Quantitative method can be defined as method which can be used in the social science, natural science. In this method systematic models , graphs and charts are used to demonstrate the experiment.
Here, the experiment is done to prove that the population having pets have healthier lifestyles as compared to the population having no pets.
So, here quantitative method is used for this experiment.
More details ? , but there are some basic questions you can ask , like , Are there any GMOs in the food or How is the product made , Is the product made naturally or by man, Hand made or made by machinery.
