Which civilization started in the nile river valley? a. china b. sumer c. egypt d. harappa

The civilization is C. Egypt civilization  

The Egyptian or the Nile Valley human progress created, as the name proposes, along the banks of the stream Nile in Egypt. Its long, limited flood plain was a force which was pulling in individuals, creatures, and plants to its banks, and giving perfect conditions to the improvement of stable networks.  

It is seen as a blessing from the god, and the yearly flooding of the Nile River provided supplement rich sediment to the land and its people, providing way for agriculture.

d is the logical answer but im not a 100% sure