Read the Passage and answer the following five Questions.
There is an uneven spatial distribution of population in India which suggests a close relationship between population and physical, socio-economic and historical factors. As far as the physical factors are concerned, it is clear that climate along with terrain and availability of water largely determines the pattern of the population distribution.

Assertion: The regions falling in the river plains and coastal areas of India have remained the regions of larger population concentration despite the fact that natural resources like land and water in these regions have shown the sign of degradation.

Reasoning: The concentration of population remains high in these areas because of an early history of human settlement and development of transport network.

Both Assertion (A) and reasoning (R) are correct and R is the correct explanation of A.

 It is observed that the regions falling in the river plains and coastal areas of India have remained the regions of larger population concentration. Even though the uses of natural resources like land and water in these regions have shown the sign of degradation, the concentration of population remains high because of an early history of human settlement and development of transport network.