Carson is running an experiment on a group of mice. They are testing the effectiveness of a new muscle growth formula. Which option describes when random assignment occurs in the experiment process?(1 point)

Responses

performing the experiment on the mice and giving one group the new formula
performing the experiment on the mice and giving one group the new formula

randomly selecting a sample to participate in the experiment
randomly selecting a sample to participate in the experiment

splitting the mice into two groups
splitting the mice into two groups

designating the group of mice that will be studied