Choose the answer that is the best topic sentence for the following paragraph.
There is much proof that owning a pet can lower blood
pressure. Scientists also believe that the calming effect of
an animal's presence can help with mental health. Even the
fact that animals need exercise contributes to the benefits
of owning a pet.
A. Owning a pet can have many psychological and physical benefits.
B. Owning a pet is a big responsibility.
C. Pets are fun and love you no matter what.
D. There are good and bad things about owning a pet.