The Irrawaddy River plays an important role in history, economic development of Myanmar from the early period. It is used as a main means of transport of Burma ancestors and important trade routed between India and China.
I believe the answer is: Imprinting
In psychology, imprinting refers to the phase where individuals become the most sensitive to learn various skills/knowledge.
Imprinting could happen on any age depending on the person, and currently we still haven't figure out a scientific way to predict the period when it should happen
I think the answer is separation of powers
The Answer Would Be "B" .