Which question would form the best basis for a quality research paper?

a. how does exercise improve heart health?
b. how much cardiovascular exercise can an 80-year-old man do every day?
c. what kind of person is healthier: an obese person or a fit person?
d. are people who exercise healthy?

A. How does exercise improve heart health?

Option A provides the best question for a quality research paper. The question is broad enough to require further research, but also narrow enough to be able to be explored deeply in a research paper. Options B and C provide questions that require very short answers. Options C and D provide question that have an obvious answer and do not require further research.

jim mohr

explanation:

- "the basic difference between keywords and subjects is that subjects (or "subject headings") have been predetermined, while keywords have not. a keyword is an easy place to start because you can use any word that seems to fit your search; this is called "natural language" searching."