The percentage of agricultural land under cultivation varies across states in India depending on factors like soil type, climate, irrigation facilities, and the importance of agriculture in the state's economy.
- Punjab (D) is known as the "Granary of India" due to its extensive agricultural activity. A significant portion of its land is under cultivation, primarily due to the state's favorable climate, irrigation infrastructure, and focus on high-yield crops such as wheat and rice. Punjab consistently has one of the highest percentages of its land under cultivation, with agriculture being the backbone of its economy.
- Kerala (C) also has a high percentage of land under cultivation, particularly for crops like rubber, coconut, and spices. However, due to the state's hilly terrain and dense forests, it does not have as much agricultural land as Punjab.
- Manipur (B) and Mizoram (A), while having significant agricultural activities, have relatively smaller areas of agricultural land in comparison to Punjab, largely due to their hilly and forested terrain.
Thus, the correct answer is Punjab (D), where the highest percentage of agricultural land is under cultivation.