Option 1 states that Kharif crops are sown at the beginning of the South-West monsoon. Kharif crops are crops that are sown in the rainy season and harvested in the autumn. The South-West monsoon typically occurs between June and September in India.

Option 2 suggests that Kharif crops are sown at the end of the South-West monsoon, which is incorrect. The sowing generally starts with the onset of the monsoon to take advantage of the rainfall for proper growth and development of the crops.

Option 3 states that Kharif crops are sown at the beginning of the North-East monsoon, which is incorrect. The North-East monsoon occurs later in the year, around October to December, and is not the ideal time for sowing Kharif crops.

Option 4 suggests that Kharif crops are sown at the end of the North-East monsoon, which is also incorrect. The North-East monsoon is the second rainy season in India, and by the end of it, it is not suitable for sowing Kharif crops anymore.

Therefore, the correct answer is Option 1, which states that Kharif crops are sown at the beginning of the South-West