The correct answer is C. Winter season.
The Western Disturbance is a meteorological phenomenon that affects the western Himalayan region and the northwestern parts of the Indian subcontinent. It is a series of cold, dry, and wet westerly winds that originate in the Mediterranean Sea and travel across the Afghanistan-Pakistan region, bringing rain and snow to the western Himalayas and the northwestern plains of India.
The Western Disturbance is most active during the winter months, from December to March. During this time, the jet stream is located further south than usual, bringing the Western Disturbances closer to the Indian subcontinent. This results in more frequent and intense rainfall in the region.
The Western Disturbance is a major source of rainfall in Haryana. The state receives an average of 700 mm of rainfall per year, of which about 60% is from the Western Disturbances. The rainfall from the Western Disturbances is essential for the agriculture and economy of Haryana.
The other options are incorrect because the Western Disturbance does not cause rainfall in Haryana during the summer, spring, or none of the above seasons.