What is meant by 'energy crisis'? (a) Shortage of hydro-electricity (b) Malnutrition leading to short supply of energy in the human body (c) Shortage of the thermal power (d) Impending danger of total exhaustion of fossil fuels like coal and petroleum

What is meant by 'energy crisis'? (a) Shortage of hydro-electricity (b) Malnutrition leading to short supply of energy in the human body (c) Shortage of the thermal power (d) Impending danger of total exhaustion of fossil fuels like coal and petroleum
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