Arrange the following group of terms in order of decreasing extension. A.…
2023
Arrange the following group of terms in order of decreasing extension.
A. Mammal
B. Animal
C. Tiger
D. Feline
Choose the correct answer from the options given below:
Answer: D. B, A, D, C — CONCEPTThe extension of a term is the class of objects to which it applies. A term covering a wider class has greater extension; moving to a subclass reduces…
- A.
B, A, C, D
- B.
A, B, D, C
- C.
C, D, A, B
- D.
B, A, D, C
Show answer & explanation
Correct answer: D
CONCEPT
The extension of a term is the class of objects to which it applies.
A term covering a wider class has greater extension; moving to a subclass reduces extension.
APPLICATION
Animal includes mammals and many other classes, so it has the widest extension here.
Mammal is contained within Animal, so its extension is narrower than Animal.
Feline is a class within Mammal, so its extension is narrower than Mammal.
Tiger is contained within Feline, so it has the narrowest extension among these terms.
CROSS-CHECK
The nesting Tiger ⊂ Feline ⊂ Mammal ⊂ Animal reverses to Animal → Mammal → Feline → Tiger when arranged by decreasing extension.
RESULT
Therefore, the required order is B, A, D, C.