A student is writing an argumentative essay about adopting shelter animals instead of buying pets. Which detail would not be relevant to the argument?

a Cats are more popular than dogs.
b Many dogs and cats need homes.
c Animals from pet stores are often unhealthy.
d Adopting shelter pets helps save lives.

a Cats are more popular than dogs.

a Cats are more popular than dogs.

To determine which detail would not be relevant to the argument, we need to evaluate each option in relation to the central argument of adopting shelter animals instead of buying pets.

a. Cats are more popular than dogs: This detail is not directly related to the argument about adopting shelter animals versus buying pets. It does not provide any information about the benefits or drawbacks of adopting shelter animals.

b. Many dogs and cats need homes: This detail directly supports the argument by highlighting the significant number of animals in need of homes and the potential benefits of adopting them. It emphasizes the availability of animals in shelters.

c. Animals from pet stores are often unhealthy: This detail supports the argument by providing a negative aspect of buying pets from stores, which contrasts with the potential benefits of adopting shelter animals.

d. Adopting shelter pets helps save lives: This detail directly supports the argument by highlighting one of the central benefits of adopting shelter animals - the opportunity to save lives and provide a loving home for animals in need.

Therefore, the detail that would not be relevant to the argument is:
a. Cats are more popular than dogs.