Based on this information, Jennifer's research design would be classified as a posttest-only design.
What is a posttest-only design?
In this design, the treatment or independent variable (X) is only applied to a group of subjects.
To carry it out, it requires two groups of subjects that have previously been randomly assigned to each of them.
Therefore, we can conclude that based on this information, Jennifer's research design would be classified as a posttest-only design.
Learn more about posttest-only design here: https://brainly.com/question/15577535
