MCQOPTIONS
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| 1. |
The commercial sources of energy consist purely of - |
| A. | power, coal, oil, gas, hydropower, and uranium |
| B. | Coal, oil, firewood, vegetable residue and agricultural residue |
| C. | power, coal, animal waste and firewood |
| D. | coal, gas, oil and firewood |
| Answer» B. Coal, oil, firewood, vegetable residue and agricultural residue | |