In the study entitled Effect of Early Absence of Father on Scholastic Aptitude, purposive sampling had already been used since the research required respondents of having grown to a single...

In the study entitled Effect of Early Absence of Father on Scholastic Aptitude, purposive sampling had already been used since the research required respondents of having grown to a single mother-parent. Which of the following would be most appropriate for examining this research issue? A. Experimental research B. Ex post facto C. Quasi-experimental D. Correlation research