Stephanie wants to know whether the quality of student's study habits and attitudes, as measured by the Study Habits and Attitudes Scale (SHA), scholastic aptitude (SA), and gender would be good predictors of high school students' academic performance, as measured by their grade point averages (GPA). Stephanie's intention is to predict a GPA using SHA, SA, and gender; therefore, she decides to examine the strength of the relationship between these variables (high school students' SHA, SA, and gender) and GPA. Both the SHA and the SA are measured with Likert scales, resulting in numeric scores. Identify the dependent variable (DV): a. SA b. SHA c. Gender d. Grade point average