Answer:
Completely randomized design
Explanation:
This is called a completely randomized design (CRD) where experimental units are assigned randomly to treatment.
We can define a completely randomized design (CRD) as one in which the treatments are assigned randomly and as such each experimental unit has equal chances of getting any one treatment. In this experimental design, any difference that is noticed among the experimental units that are getting the same treatment is regarded to be experimental error.
