Answer:
D.
Explanation:
D. because wouldn't it be hard if you couldn't have a precise language everyone spoke. If you saw someone they could say Kangaroo and you would be like WHHAT???
Provide more information of the text!!!
more info is needed for this question im sorry
C is the answer. Sleep deprivation is the only claim that has hard evidence behind it, the others are unsupported or speculation.
