Match List I with List II:

List I	List II
[A] Salim Ali	[I] Wild beauty
[B] Jim Corbett	[II] The fall of a sparrow
[C] Kailash Sankhala	[III] Night and days: my book of Indian wildlife
[D] M. Krishnan	[IV] My India

The correct option is (A)-(II), (B)-(IV), (C)-(I), (D)-(III).

To understand why this is the correct match, let us look at the works and contributions of each of the famous Indian naturalists and conservationists listed in List I:

[A] Salim Ali: Known as the "Birdman of India", Dr. Salim Ali was an eminent ornithologist and naturalist. His autobiography is titled "The Fall of a Sparrow". Therefore, (A) matches with (II).

[B] Jim Corbett: A legendary hunter turned conservationist and author, he wrote extensively about his experiences in the foothills of the Himalayas. One of his famous books is "My India", where he describes the landscapes and people of India. Therefore, (B) matches with (IV).

[C] Kailash Sankhala: He was an Indian biologist and conservationist, who served as the first Director of Project Tiger. He is well-known for his books on Indian wildlife, one of which is "Wild Beauty". Therefore, (C) matches with (I).

[D] M. Krishnan: An influential Indian naturalist, photographer, and writer, he documented Indian fauna over many decades. His celebrated collection of essays and columns is titled "Nights and Days: My Book of Indian Wildlife". Therefore, (D) matches with (III).

Combining these individual matches gives us the correct sequence:
(A)-(II), (B)-(IV), (C)-(I), (D)-(III).