Which One of the Following Statements Would Be Appropriate for the Method

Which one of the following statements would be appropriate for the method section of a research report?

A) Past research shows that men generally talk more than women.
B) For men, the average time spent talking was 10.7 minutes while for women the average was 7.4 minutes.
C) While three men and three women discussed an issue, an experimenter measured time spent talking by using a stopwatch.
D) Contrary to popular belief, in groups of mixed gender, men talk more than women, interrupt more than women, and are more likely to direct discussion topics.