The correct answer is: a) October-March.
The Rabi season is the winter crop season in India. It is the main agricultural season in Punjab, and it is the time when wheat and barley are grown. The Rabi season generally extends from October to March.
Option b) is incorrect because the monsoon season is from June to September. Option c) is incorrect because the summer crop season is from March to June. Option d) is incorrect because the winter crop season is from October to March.
The Rabi season is important for the economy of Punjab. Wheat is the main crop grown in the Rabi season, and it is a major source of income for farmers in Punjab. The Rabi season is also important for the food security of India. Wheat is a staple food in India, and the Rabi season is the time when most of the wheat is grown.