Dr Ulku Is Developing a New Study and Submitting a Grant

Dr. Ulku is developing a new study and submitting a grant to help fund the implementation of that study. She is going to take baseline measurements at the initial assessment and will be measuring responses before and after exposure to a bright UV light and images of natural disasters. Dr. Ulku is using what design?

A) Latin square design
B) longitudinal design
C) repeated measure design
D) pretest-posttest design