Question

20. How was randomization

used in this experiment?
Answer choices:
The individuals were randomly
selected to participate.
The temperature, bedding, and
lighting were the same for all.
The colored chips were used to
determine the treatments.
The days they were asked to
sleep at the clinic were random.

Answer 1

D. The days they were asked to sleep at the clinic were random. Hope it helps!~

(Sorry if you get it wrong or I got it wrong-)

~The Confuzzeled homan