Introduction:
High yielding variety seeds (HYV) have revolutionized Indian agriculture by increasing crop productivity and contributing to food security. This question asks about the introduction of HYV seeds in India and their impact on agriculture.

Explanation:
The correct answer is option 'B', which refers to the Green Revolution. The Green Revolution was a period of agricultural transformation that occurred in India during the 1960s and 1970s. During this period, HYV seeds were introduced to Indian farmers, and they had a significant impact on crop yields.

Impact of HYV Seeds:
The HYV seeds were specially bred to produce higher yields than traditional varieties. They were also more resistant to pests and diseases, which meant that farmers could produce more crops from the same amount of land. The introduction of HYV seeds led to several benefits, including:

1. Increased Crop Yields: HYV seeds produced much higher yields than traditional varieties. This meant that farmers could produce more food from the same amount of land. In fact, some crops like wheat and rice saw an increase of almost 200% in their yields.

2. Food Security: The increase in crop yields helped to improve food security in India. The country was able to produce more food, which meant that there was enough to feed the growing population.

3. Economic Growth: The increase in crop yields also had a positive impact on the economy. Farmers were able to sell their surplus crops, which generated income for them. This income, in turn, led to increased economic growth in rural areas.

Conclusion:
In conclusion, the introduction of HYV seeds in India was a significant event in the country's agricultural history. The Green Revolution, which brought about the introduction of HYV seeds, had a profound impact on crop yields, food security, and economic growth. Today, India is one of the largest producers of food in the world, thanks in part to the HYV seeds that were introduced during the Green Revolution.