DrSegal Is Testing the Hypothesis That Television Watching in Children

Multiple Choice

Dr.Segal is testing the hypothesis that television watching in children under the age of two enhances the development of language skills.In her study,the use of random assignment ____.

A) ensures that the dependent variable reflects the personal qualities of the participants
B) addresses situational confounding variables,such as the time of day or weather conditions
C) ensures that the independent variable reflects the outcomes of the dependent variables
D) tends to cancel out individual differences among participants in the experimental group and the control group