Answer:
B. Without the Nile River, ancient Egyptian civilization could not have developed so quickly.
Step-by-step explanation:
It states that" Initially, they used the Nile River only as a natural resource to help with agriculture." If the river were ever to be non existent, then the civilization could have not survived and it would have took the ancient Egyptian civilization not-so quickly to developed. Thus, making the answer as B. Without the Nile River, ancient Egyptian civilization could not have developed so quickly.