A Study Compares the Effect on College Students of Two

Multiple Choice

A study compares the effect on college students of two different TV advertisements for spring break in Gulf Shores, Alabama. Call the ads "Ad #1" and "Ad #2." We want to know which ad makes more students want to visit Gulf Shores during spring break. The subjects are 90 students taking a course in hotel management. The design of the study looks like this: The method used to form the groups appears in the diagram above at the point marked "Question A." This method is

A) men in Group 1, women in Group 2.
B) students choose which group they want.
C) voluntary response.
D) randomization.
E) the first students to appear go to Group 1.