Commercial sources of energy purely consist of-
- APower, coal, oil, gas, hydro-electricity and uranium
- BCoal, oil, firewood, vegetable waste and agricultural waste
- CPower, coal, animal dung and firewood
- DCoal, gas, oil and firewood
Show answer and explanation
Correct answer: (a) Power, coal, oil, gas, hydro-electricity and uranium
Explanation
Among the commercial sources of energy, strictly included are electricity, coal, oil, gas, hydroelectric power and uranium.