The correct answer is: Northeast to southwest.
Haryana is a state in northern India. It is located in the Indo-Gangetic Plain, which is a vast plain that stretches from the Himalayas to the Bay of Bengal. The elevation of Haryana generally slopes from northeast to southwest. This is because the Himalayas, which are the highest mountain range in the world, are located to the north of Haryana. The mountains block the moisture-laden winds from the Indian Ocean, which causes the climate of Haryana to be dry. The land in Haryana is also relatively flat, which allows the winds to blow freely from the northeast to the southwest.
The other options are incorrect because they do not accurately reflect the elevation of Haryana. The elevation of Haryana does not slope from northwest to southeast, southwest to northeast, or east to west.
The elevation of Haryana is important because it affects the climate of the state. The dry climate of Haryana is caused by the Himalayas, which block the moisture-laden winds from the Indian Ocean. The flat land of Haryana also allows the winds to blow freely from the northeast to the southwest. This causes the climate of Haryana to be hot and dry in the summer and cold and dry in the winter.