In the Are You Equipped? Section at the Beginning of the Chapter

Multiple Choice

In the Are You Equipped? section at the beginning of the chapter, a study was described looking at the relationship between birth weight and adolescent depression.The participants were divided into groups based on their birth weight, either low or normal birth weight.How many levels of the independent variable were there in this study?

A) 1
B) 2
C) 3
D) 4