Answer:
Cross Sectional Quasi-Experiment
Step-by-step explanation:
Based on the information provided within the question it can be said that the type of design that Bart is using in this scenario is a Cross Sectional Quasi-Experiment. This is a type of experiment in which two or more different types of groups are compared at the same time in order to analyze the results and come to a conclusion of the experimental variable that is being researched. Which in this case would be "who has better reaction time.".