Options:
A.
B.
C.
D.
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Earlier discussion
1 older comment kept for context.
Oluwaseun Adeyemi
D is correct, because, it is also shifting cultivation. It is a system of farming or the cultivation of one pieces of land for some years and leaving it for some years with the aim of restoring fertility to the soil naturally but during this fallow period, the farmer cultivates another pieces of land.