Which One Of The Following Accurately Describes A Disadvantage Of Using A Pretest-posttest Design Group Of Answer Choices?

Which One Of The Following Accurately Describes A Disadvantage Of Using A Pretest-posttest Design Group Of Answer Choices? Which of the following accurately describes a disadvantage of using a pretest-posttest design? It is time-consuming. What is a disadvantage of pretest posttest design? The only disadvantage of the pretest-posttest control group design compared to the posttest