In conducting an experiment, the experimenter divides a sample group of 60 children into two groups of 30 called group a and group b.
to make sure the two groups are similar in terms of age, iq. and so on, the experimenter will assign people to either group a or b using a/an assignment procedure, such as a coin toss, where heads sends a subject to group a and tails sends a subject to group b.

a. independent

b. experimental

c. random

d. subjective