A Group of Students Who Completed a Research Methods Class

Multiple Choice

A group of students who completed a research methods class at the local college were given a questionnaire to assess their feelings about the homeless and after were randomly assigned to either the experimental group or the control group.The experimental group was required to volunteer at the local homeless shelter while the control group was not.After one month of volunteering,members of both groups were asked to complete the questionnaire on feelings concerning the homeless again.What type of research design is this?

A) a quasi-experimental design
B) a classical experimental design
C) a time-series design
D) an interrupted time-series design