In an Experimental Design _____,Whereas in a Correlational Design _____

Multiple Choice

In an experimental design _____,whereas in a correlational design _____.

A) there is only one variable (the independent variable) ;there are two variables (X and Y)
B) there are two X variables;there are an X and a Y variable
C) researchers assign each person an X score and then measure the score on the Y variable;researchers measure scores on variables that a participant has already experienced
D) researchers measure scores on variables that a participant has already experienced;researchers assign each person an X score and then measure the score on the Y variable