The correct answer is C. South and South-Western part.
The loo is a hot, dry, dusty wind that blows in the Indian subcontinent during the summer months. It is most common in the northwestern states of India, including Haryana. The loo is caused by a high-pressure system over the Tibetan Plateau that pushes hot air down into the Indian subcontinent. The hot air then picks up dust and sand as it travels across the land.
The loo can be very dangerous, as it can cause heatstroke, dehydration, and respiratory problems. It is important to stay indoors and avoid strenuous activity during the loo.
Option A is incorrect because the eastern part of Haryana is not as affected by the loo as the southern and southwestern parts.
Option B is incorrect because the northern part of Haryana is not as affected by the loo as the southern and southwestern parts.
Option D is incorrect because the central part of Haryana is not as affected by the loo as the southern and southwestern parts.