The textbook describes a study in which Chicago high school students were divided into a group offered a part-time job and a group offered no job. The group offered no job is called the group.

The redundant group

Explanation:

In an experiment you test things. This things we test are called samples and most times when we have two samples as in this case-one usually serves as the major sample and the other serves as a feedback or measure. So the first is measured relative to the second. Here in this case group without jobs show no activity that are called redundant.

answer; i believe its called ; checks   and balances;