Random Assignment Differs from Random Selection Because

Multiple Choice

Random assignment differs from random selection because:

A) random assignment deals with how participants for a study are chosen to begin with, whereas random selection deals with how participants in a sample are assigned to levels of the independent variable.
B) random assignment deals with how participants in a sample are assigned to levels of the independent variable, whereas random selection deals with how participants for a study are chosen to begin with.
C) random assignment is rarely achieved, but random selection is almost always achieved.
D) random assignment must be performed by the experimenter who is carrying out the study, but random selection can be carried out at the analysis stage.