Final answer:
Jennifer would most likely use a correlational study to investigate the relationship between anorexia nervosa in teenage girls and the degree of abuse they experienced when they were children.
Step-by-step explanation:
The student would most likely use a correlational study to investigate the relationship between anorexia nervosa in teenage girls and the degree of abuse they experienced when they were children.
In a correlational study, the researcher examines the relationship between two variables without manipulating them. They collect data on both variables and analyze the correlation between them. In this case, Jennifer would collect data on anorexia nervosa in teenage girls (dependent variable) and the degree of abuse they experienced as children (independent variable). By analyzing the correlation, she can determine if there is a relationship between the two variables.