Troy, an african american student, works in cooperation with students from a variety of backgrounds who each contribute different parts of a classroom project in order for the group to reach a common goal. troy is participating in

Jigsaw Classroom

Explanation:

Jigsaw Classroom -

It is a method , which removes any racial conflict in the classroom , and upgrades learning method , increases motivation of the student and learning experience , is known as a jigsaw classroom .

In this method , the students rely on each others success , in this method , students are broken down into small groups , which joins back as completed jigsaw puzzle .

Hence , from the question , Troy is participating in a jigsaw classroom .

c. wright mills's sociological imagination suggest investigating to explain this increase?

more than 1 person for sure