The 'Amrita Devi Bishnoi National Award' is given for:

The correct answer is A, Wildlife protection. The Amrita Devi Bishnoi National Award is given for outstanding courage and devotion in protecting wildlife. It was instituted by the Union environment ministry in 1994 and carries a cash prize with a citation. It is named after Amrita Devi Bishnoi, who in 1730 at Khejarli near Jodhpur clung to a khejri tree to stop the Maharaja's men from felling it; she and more than 360 other Bishnois died in that protest. The Bishnoi community, which follows the 29 rules laid down by Guru Jambheshwar, still guards the blackbuck, the chinkara and the khejri tree of the Thar desert, and the Khejarli sacrifice is remembered as an inspiration for the later Chipko movement. Option B is wrong because energy saving is rewarded by the National Energy Conservation Awards. Option C is wrong because broader environmental work is honoured by the Indira Gandhi Paryavaran Puraskar. Option D is wrong because biodiversity effort is recognised by the India Biodiversity Awards. Exam tip: tie Amrita Devi to Khejarli 1730, the khejri tree and the blackbuck of Rajasthan.