MCQOPTIONS
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| 1. |
………….differentiates between five stages of human development: In thefirst, people use energy of their own muscles.In the second, they use energy of domesticated animals’.In the third; they use the energy of plants (agricultural revolution). In the fourth, they learn to use theenergy of natural resources: coal, oil, gas. In the fifth, they harness nuclear energy. |
| A. | Eric S. Raymond |
| B. | George B.Selden |
| C. | Leslie White |
| D. | Richard Stallman |
| Answer» D. Richard Stallman | |