$Animal$ : Represents the whole animal world, Kingdom Animalia.
$Mammal $: Belongs to class Mammalia under phylum Chordata, in Kingdom Animalia.
$Feline$ : Mammal, and belongs to cat family.
$Tiger$ : Mammal and largest living cat species.
We have ro organise in terms of increasing intension, i.e more specific :
$ Animal → Mammal → Feline → Tiger $
$ Correct Ans : C $