Correct Option: D

The Terai is a belt of marshy grasslands, savannas, and forests located south of the outer foothills of the Himalaya, the Siwalik Hills, and north of the Indo-Gangetic Plain of the Ganges, Brahmaputra and their tributaries. In northern India, the Terai spreads eastward from the Yamuna River across Himachal Pradesh, Haryana, Uttaranchal, Uttar Pradesh and Bihar. Hardoi district is a part of Lucknow division. Hardoi district is contiguous of Shahjahanpur and Lakhimpur Kheri districts on the north, Lucknow and Unnao districts on the south, Kanpur and Farrukhabad districts on the west and Sitapur district on the east. The Terai region comprising Kheri, Pilibhit and Bahraich districts were recently in news for having a sizeable population of Indian vultures despite vulture casualties due to renal failure.