Answer:
When assigning a lengthy research project, Mr. Barnett advises his students to divide the project into a number of smaller tasks and then to reinforce themselves after they complete each one.
Explanation:
By doing this, Mr. Barnett put the students in a situation where the students are forced to manage their own time each day in order to complete the smaller tasks for the research.
This is a form of self-regulation promotion that unconsciously train the students to be able to consistently focused their time in order to do works that unrelated to their usual day to day activity. When they bring this behavior to the workplace, this will help the students in balancing between their career and private life.
Social stratification is basically the separation of society into different classes. Karl Marx thought this system will inevitably fall and a new Communist society formed by only the middle class will take its place.
B ) a decrease in the supply of consumer goods
