Answer:
C. Dogs often require more care and attention than cats.
Step-by-step explanation:
C. is the only one that is contrasting dogs from cats. They used the word “than” so that could also indicate that they are contrasting them. Plus, both A. and D. are comparing dogs to cats. B. is just talking about dogs only. So your answer should be C.
I hope it helps! Have a great day!
bren~