Answer:
pre-test post-test design
Step-by-step explanation:
The answer is "pre-test post-test design".
In the question, Dr. Ulku is doing a new study where she is going to take observations both before and after the subject is subjected to the UV lights and images of natural disaster.
By doing this, Dr. Ulku is running a "pre-test post-test design" test on the subject.
A "pre-test post-test design" is a design experiment where the observations are studied both before the treatment as well as after the treatment. Here the experimenter can achieve the results both before the treatment and after the treatment and can compare and contrast these result.
Hence the answer is ---
"pre-test post-test design".