PART A No brass lanterns are fixtures that glitter because all crystal chandeliers are fixtures that glitter, and no brass lanterns are crystal chandeliers.
Which of the following correctly expresses the form of this argument? PART B
Which of the following substitutions proves the argument invalid?
A) C = cats, F = fish, B = animals.
B) C = dogs, F = fish, B = mammals.
C) C = cats, F = animals, B = dogs.
D) C = animals, F = mammals, B = fish.
E) C = dogs, F = mammals, B = animals.

Question

PART A No brass lanterns are fixtures that glitter because all crystal chandeliers are fixtures that glitter, and no brass lanterns are crystal chandeliers.
Which of the following correctly expresses the form of this argument?  PART B
Which of the following substitutions proves the argument invalid?
A) C = cats, F = fish, B = animals. 
B) C = dogs, F = fish, B = mammals. 
C) C = cats, F = animals, B = dogs. 
D) C = animals, F = mammals, B = fish. 
E) C = dogs, F = mammals, B = animals.

Quizplus · Accepted Answer

The Answer of PART A No brass lanterns are fixtures that glitter because all crystal chandeliers are fixtures that glitter, and no brass lanterns are crystal chandeliers.
Which of the following correctly expresses the form of this argument?  PART B
Which of the following substitutions proves the argument invalid?
A) C = cats, F = fish, B = animals. 
B) C = dogs, F = fish, B = mammals. 
C) C = cats, F = animals, B = dogs. 
D) C = animals, F = mammals, B = fish. 
E) C = dogs, F = mammals, B = animals.

PART a No Brass Lanterns Are Fixtures That Glitter Because