Final answer:
The answer is B) Correlation. The study aims to identify the correlation between nuns' lifestyles and their likelihood of developing dementia.
Step-by-step explanation:
The correct answer is B) Correlation. A study of Catholic nuns over time aims to identify the correlation in nuns, who all share a remarkably similar lifestyle, between who gets dementia and who does not.
Correlation is a statistical measure that describes the relationship between two variables. In this case, the researchers want to determine if there is a correlation between the lifestyle of Catholic nuns and their likelihood of developing dementia.
To study this, the researchers will gather data on the lifestyle factors of the nuns and track their cognitive health over time. By analyzing the data, they can assess if there is a correlation between certain lifestyle choices and the development of dementia.