Final answer:
The introduction of high-response wheat, along with the use of fertilizer, irrigation, and machinery, resulted in increased crop yields and self-sufficiency in cereal grains in India's agricultural system.
Step-by-step explanation:
In the 1960s, India was facing a famine and had a rapidly growing population. To address the issue, American farmers shipped wheat to India, and a new type of high-response wheat developed by Norman Borlaug was introduced. This led to increased crop yields and self-sufficiency in cereal grains by 1974. The use of fertilizer, irrigation, and machinery also contributed to the increased output in certain crops within India's agricultural system.