The correct answer is option 3: High yielding variety (HYV). HYV refers to a type of crop variety that has been bred or developed to produce a higher yield or output compared to traditional varieties. These varieties are specifically designed to have improved characteristics such as increased disease resistance, better tolerance to adverse weather conditions, and higher nutrient content. HYVs have played a significant role in increasing agricultural productivity and ensuring food security globally. They have been instrumental in addressing the challenge of feeding a growing population by producing larger quantities of crops from the same amount of land. In contrast, options 1, 2, and 4 are incorrect choices as they do not accurately reflect the meaning of HYV.