想請教一下Q35

[fannywu94]

Q35:
The primary purpose of the passage is to explain the

A. qualities that make a particular organism unique
B. evolutionary change undergone by a particular organism
C. reasons that a phenomenon benefits a particular organism
D. way in which two particular organisms compete for a resource
E. means by which a particular organism has been able to survive in a barren region

想請教一下A為什麼不行呢，這篇文章是不是主要在強調此物的特殊性及解釋獨特性產生的原因？？
此外，我也不明白C選項中，phenomenon benefit是在強調什麼耶！！麻煩大家幫我解惑一下，謝謝拉！！

[fannywu94]

SORRY!!po錯地方了∼∼請大家見諒