Traditional agriculture is mostly powered by humans or animals. So the correct option is D.
Traditional agriculture or primitive agriculture uses ancient methods of farming. Traditional agriculture was practiced without proper knowledge or skills.
It involved primitive tools which were to be operated manually by humans or animals. The animals were used for ploughing the fields. A plough was drawn by oxen for this purpose.
Cultivators were also drawn by oxen. For a farmer that did not have access to these animals, they had to draw these tools themselves.
Thus, traditional agriculture was mostly powered by humans or animals.
Therefore the correct option is D.
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