Consider the following pairs:Wildlife Naturally found in1.Blue-finned Mahseer : Cauvery River2.Irrawaddy Dolphin : Chambal River3.Rusty-spotted Cat : Eastern GhatsWhich of the pairs given above are correctly matched?

1. A

   1 and 2 only

   (a) 1 and 2 only. Pair 1 is right — blue-finned mahseer is a Cauvery fish — but pair 2 is wrong: Irrawaddy dolphin is of Chilika, the Sundarbans–Myanmar–Mekong coasts, not the Chambal. Chambal is famous for the Ganges river dolphin and gharial. So 1-and-2 is not the key.

2. B

   2 and 3 only

   (b) 2 and 3 only. Pair 2 fails, so this code is not the key.

3. C

   1 and 3 only

   (c) 1 and 3 only. Blue-finned mahseer–Cauvery matches. Rusty-spotted cat occurs in the Eastern Ghats (and other Indian forests). Irrawaddy dolphin–Chambal does not. That 1-and-3 code is the official key.

4. D

   1, 2 and 3

   (d) 1, 2 and 3. All-three needs the false Chambal–Irrawaddy pair, so it is not the key.

Summary. Official key is (c) 1 and 3 only. Cauvery mahseer conservation is a live southern-rivers story. Rusty-spotted cat is among the world’s smallest cats and is recorded from Eastern Ghats landscapes. Irrawaddy dolphin is not a Chambal animal. Honour the stored letter (c).