Respuesta :
A. coal is the answer.
Coal has increased over the past 6 years. (:
I hope this helps.
The material import that has increased over the past 6 years is as a result of the need for electricity, this import is coal, Option A is correct.
What are imports?
Imports are simply defined as products or services purchased in one country but made in another. International trade is made up of imports and exports.
In conclusion, The main reason for the depletion of coal stocks at power plants, is an exponential increase in demand for electricity.
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