Professor Johansson is interested in examining how study breaks influence memory. She allows one group of psychology students to take a single 15-minute break while another group of psychology students takes three 5-minute breaks. What is the dependent variable in this example?

• A. The topic introduced in the lecture
• B. The major of the students
• C. The students' memory of the material
• D. The number of study breaks allowed

Answer: (C)