Answer:
The number of thermal power plants increased between 1950 and 1975.
Explanation:
Here, the table that shows the amount of water withdrawn in billion gallons per year, between 1950 and 2005,
Year 1950 1965 1975 1990 2005
Amount 180 340 420 410 410
Since, 420 > 180,
Also, 50 percent of water withdrawn is used up by thermometric power plants.
Thus, thermal power plants in 1975 > thermal power plant in 1950
Therefore, the number of thermal power plants increased between 1950 and 1975.
Second option is correct.
Note : first option is incorrect.
Since, by the above table,
The least amount of water used by power plant is 180 billion gallons per year,
Thus, third option is incorrect,
Now, the table does not represents energy produced,
Fourth option can not be said correct.
