Arrange the following group of terms in order of increasing extension. Choose the correct answer from the options given below.

1.Feline

2.Mammal

3.Tiger

4.Animal

A3, 1, 2, 4 ✓ Correct

B3, 1, 4, 2

C4, 2, 1, 3

D4, 3, 1, 2

Correct answer: (A) 3, 1, 2, 4

Explanation

Increasing extension runs from the narrowest class to the widest, because extension counts the individuals a term denotes.

Tiger names the smallest class, covering the fewest members.

Feline is wider, since it holds all tigers together with other cat-kinds.

Mammal is wider still, embracing every feline and many more families.

Animal is the widest, taking in all mammals and beyond, giving 3, 1, 2, 4.

Extension varies inversely with connotation.

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