Emily Dawson and Seven Other People Were Paid to Get

Emily Dawson and seven other people were paid to get together and discuss a new product idea proposed by Johnson & Johnson. Researchers observed the interaction of the group. During the discussion, Emily was annoyed that Jack, another participant, seemed to "hog" the discussion and didn't give others a chance to speak. This is an example of a problem when using

A) focus-group interviews.
B) group surveys.
C) personal interview surveys.
D) sampling teams.
E) group think.