What is the connection between the sections "A source of life" and "Protected from invaders"?

A
Both sections describe how the landscape contributed to the development of ancient Egyptian civilization.
B
Both sections outline why the Nile River was essential to the development of ancient Egyptian civilization.
C
Both sections explain how ancient Egyptian civilization affected the Nile River and the surrounding environment.
D
Both sections provide evidence to show that ancient Egyptian civilization was not affected by the desert landscape.


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