The correct answer is: C. South-West Monsoon Season.
The South-West Monsoon Season is the longest season in the valley of Kashmir. It starts in June and ends in September. The monsoon rains are essential for the agriculture and economy of the region.
The summer season is the second longest season in the valley of Kashmir. It starts in April and ends in June. The summer months are hot and dry.
The winter season is the shortest season in the valley of Kashmir. It starts in December and ends in March. The winter months are cold and snowy.
The post-monsoon season is the transition period between the monsoon season and the winter season. It starts in October and ends in November. The post-monsoon season is a pleasant time to visit the valley of Kashmir.