Which of the Following Is an Example of a Quasi-Experimental

Multiple Choice

Which of the following is an example of a quasi-experimental study?

A) A study that tests whether the number of parks in a neighborhood is correlated with children's physical activity levels.
B) A meta-analysis that combines the results of studies measuring the correlation between children's physical activity levels and the number of parks in their neighborhood.
C) A study that compares changes in children's physical activity levels from before, to after a new park is built in their neighborhood.
D) None of the above.