Correct Option: D

Slash-and-burn is an agricultural technique which involves cutting and burning of forests or woodlands to create fields. It is subsistence agriculture that typically uses little technology or other tools. It is typically part of shifting cultivation agriculture, and of transhumance livestock herding. In slash-and-burn agriculture, forest will typically be cut months before a dry season. The “slash” is permitted to dry, and then burned in the following dry season. The resulting ash fertilizes the soil, and the burned field is then planted at the beginning of the next rainy season with crop such as upland rice, maize, cassava, or another staple crop. Most of this work is typically done by hand, using machetes, axes, hoes, and other such basic tools.