Which of the Following Describes an Example of Research, from the Perspective

Multiple Choice

Which of the following describes an example of research, from the perspective of the Institutional Review Board?

A) Collecting demographic data from a very large number of people in a city census.
B) Interviewing a customer on his recent experience with a product.
C) Gathering articles online that support the side you are on in a debating competition.
D) Researchers observing how many students litter in a public university campus setting compared to a private university campuses.