Answer:
Option D, Subsistence agriculture
Step-by-step explanation:
Subsistence agriculture is the most common agriculture practice in the Midwest regions. There are four types of Subsistence agriculture. These are as follows -
Shifting agriculture - it was based on clearing of forest and then producing new cultivating crops
Primitive agriculture - Practiced on small land parcels and primitive tools were used.
Nomadic herding. - Here travelling with animals and practicing agriculture over a small piece of land is common.
Intensive subsistence farming - It aims at producing high yield with low manpower input