Read the given paragraph and select the correct option regarding P, Q, R and S.
According to Red list of International Union for Conservation of Nature (IUCN), __P__ is an extinct animal, ___Q ___is an endangered animal, ___R__ is a vulnerable animal whereas ___S____ is a critically endangered animal.

Answer

B

Explanation

According to the Red list, the taxon is considered extinct if it is completely eliminated or died out from Earth. E.g., Passenger pigeon, Dodo. A taxon is considered critically endangered if it is facing very high risk of extinction and can become extinct in the immediate future. E.g., Silvery pigeon, etc. A !axon is said to be endangered if it faces risk of extinction in the near future. E.g., Asia elephant, Golden langur, Blue whale, Two banded chameleon, etc. A taxon is considered vulnerable if the population is sufficient but is under going depletion due to some reason. E.g., Olive ridley turtle, Giant panda, Indian rhinoceros, Sloth bear. Chinkara and Desert kangaroo rat falls in least concern category.