In Their Investigation of Students' Participation in Class Discussion,what Did

In their investigation of students' participation in class discussion,what did sociologists David Karp and William Yoels find?

A) Most students with a grade point average of "B" and above are active participants in relevant discussions.
B) On average,a very small number of students are responsible for the majority of discussion that occurs in class on any given day.
C) Only the brightest students participate in class discussions.
D) The size of the class and the physical structure of the classroom affected classroom participation.