题目内容
（请给出正确答案）
[主观题]
The author provides information that would answer which of the following questions'？ Ⅰ. Wh
at eventually led to the extinction of the robust proto-humans？ Ⅱ. What were the causes of the desiccation of the African landscape？ Ⅲ. What caused the initial spurt in Homo's brain growth？
A．Ⅰ only
B．Ⅲ only
C．Ⅰ and Ⅱ only
D．Ⅱ and Ⅲ only
E．Ⅰ, Ⅱ, and Ⅲ
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