C. Rich farmland in the river valley is correct, because the Nile River's water kept the ground fertile and made for good agriculture.
Explanation:
The culture and the connection between people within society are the subject of social sciences. A broad variety of topics are covered in social science, like sociology, art history, psychology,and law.
Answer:
Option B is true
Explanation:
There is an inefficient use of resources as depicted and hence there is a wide gap in supply and demand. Hence point B is correct
Point A depicts that due to higher demand of consumer good, there is a need to enhance the efficiency to meet the market demand. Thus option A is in correct partially
The opportunity cost of point C is higher than point B thus option C is incorrect.