The Nile River Valley is home to most of Egypt's population today, very fertile and where the Egyptian civilization began. The correct option among all the options that are given in the question is the last option or option "d". I hope that the answer will come to your help as you were expecting.
The Nile River is one of the most important rivers in Africa and considered the longest river in the world, this crosses Egypt, Sudan, Ethiopia, among other countries. Because of this, the Nile River and the valley on it had played an important role during history, in this way, it was in the Nile River Valley the Egyptian civilization began, this occurred around 3100 BC due to the water and fertility of the area. Besides this, nowadays, most of the population in Egypt and other countries live in this valley, this can be explained as the fertility of the soil has allowed people to grow crops and also the water is essential to them. Thus, the Nile River Valley is all of the above.
