Dr. Crondall is studying who's happier - married or non-married couples. He uses people's current marital status as an independent variable because he can't randomly assign people to a married or single group. What kind of research strategy doesn't employ random assignment?
a. a correlational study
b. a quasi-experiment
c. a longitudinal study
d. a survey
e. an experiment

b. a quasi-experiment

Explanation:

Based on the scenario being described within the question it can be said that the strategy that does not employ random assignment would be a quasi-experiment. This is a form of study that is used to estimate the casual impact that intervention has on a specific population without having to use random assignment to do so, unlike other forms of study.

answer; eliminate parking problems in cities, because a car took up only half as much space as a horse and buggy;