A Researcher Designs a 2 * 2 * 2 Complex

Multiple Choice

A researcher designs a 2 * 2 * 2 complex design in which the first independent variable uses a random groups design,the second independent variable uses a natural groups design,and the third independent variable uses a repeated measures design.The researcher wants to have 20 participants in each independent groups condition.How many participants will she need to recruit?

A) 20
B) 40
C) 80
D) 160