What is/are unique about 'Kharai camel', a breed found in India? 1. It is capable of swimming up to three kilometres in seawater. 2. It survives by grazing on mangroves. 3. It lives in the wild and cannot be domesticated. Select the correct answer using the code given below.

Gives a general biological rule: animals have intrinsic abilities (including swimming) that determine their capacity to cross water barriers.

A student could use this rule to ask whether any camel breed has evolved intrinsic swimming ability and then seek geographic/ethnographic evidence that a coastal camel population might have such adaptation.

States that India contains a broad spectrum of native livestock breeds (including many camel breeds), implying local genetic diversity and possible local adaptations.

A student could combine this with knowledge of coastal environments in India to hypothesize that a camel breed living near the sea might have developed unusual behaviors (e.g., entering water).

Notes that arid areas include the Rann of Kachchh and the Thar Desert — places where camels live, some of which are close to sea/coastal regions (Rann of Kachchh is a coastal salt marsh).

A student could use a map to locate these coastal/near-coastal camel habitats and then investigate whether local camel populations interact with seawater.

Describes pastoral movements to coastal agricultural tracts (Konkan), showing pastoralists and their livestock operate in near-coastal zones.

A student might infer that pastoralists living/traveling near coasts could expose camels to seawater, prompting inquiry into behavioral adaptations like swimming.

Explains that some aquatic mammals are obligate to particular water types (marine vs freshwater), illustrating that affinity for water is a specific, specialized trait.

A student could use this pattern to reason that swimming long distances in seawater would be a specialized trait for a typically terrestrial mammal, so evidence of such behavior would require strong ecological or ethological support.