The correct option is D High yield
In the 1960s, an American scientist Norman Borlaug experimented with varieties of wheat, creating disease-resistant strains that could withstand harsh climate. This high-yielding variety of wheat was introduced in Mexico and it increased the production of wheat by three times.
Borlaug’s high-yielding variety of wheat was responsible for a 60% increase in harvests in India and helped India get one step closer to becoming agriculturally self-sufficient.