The answer is: 1990 - 2000
By this time period, more people realize that energy generated from hydroelectric power is much more sustainable compared to other alternatives since it mostly relied on renewable resources. Between this period of time, nations on average use 2000 - 2500 billion kwh from hydroelectric power.
The use of hydroelectric power was able to reach its zenith in the period of 1990 - 2000.
The reason for this was the realization that more environmental policies were needed to protect the planet. Nations also did not want to rely on fossil fuels as much as Arab nations had held nations hostage with it.
In conclusion, option C is correct.
Find out more on hydroelectric power at https://brainly.com/question/1566544.
