One Reason Random Assignment Is Considered Important in Experimental Research

Multiple Choice

One reason random assignment is considered important in experimental research is because

A) it allows researchers to determine which two variables are correlated to one another.
B) it allows a more representative sample of participants to be chosen for the study .
C) it allows researchers the ability to infer cause and effect.
D) both it allows a more representative sample of participants to be chosen for the study and it allows researchers the ability to infer cause and effect.