Monica Has the Participants for Her Experiment Sign Up on a Sheet

Multiple Choice

Monica has the participants for her experiment sign up on a sheet of paper. She then cuts each name out individually, and places all the names in a box. Monica then pulls the first name out of the box and writes the name on the list for the experimental group in her study. The second name from the box is written on the list for the control group. She repeats this action until all the names are listed in one of the two groups. This procedure is called

A) placebo effect.
B) selection bias.
C) random assignment.
D) experimenter bias.