Which of the following examples of using the internet to conduct research meets the federal definition of research with human subjects?

A. Downloading a publicly available dataset that includes high school students’ academic achievement rates. The data are in aggregate and were derived from multiple school districts from different states.
B. Conducting an on-line focus group with cancer survivors to determine familial support systems. The researcher also invites subjects’ significant others to be a part of the focus group.
C. Analyzing a website visitor report from several pro-anorexia blogs to determine the popularity of each blog. Access to the blogs is not restricted.
D. Gathering data to supplement an oral history project about a local civil rights activist. The activist passed away while the researcher was in the process of conducting in-person interviews with the individual’s social network.