Question

Which best completes the sentence? A dog's need for companionship seems greater than __________ .

a. cats'
b. a cat's
c. cats
d. a cat

Answer 1

B. a cat's

since it started out with "a dog's need" it is talking about one dog. so it would be talking about the companionship of one cat, so it would be "a cat's"

Answer 2

'b' is correct  because when you say a cat's ,companionship is understood and doesn't need to be repeated