Choose the paragraph that this topic sentence would best fit. Owning a pet is a responsibility every family should take
on.

D

Explanation:

The  paragraph that fits the topic sentence would have to describe why families should own a pet as their responsibility. The last paragraph, D, explains this best. It claims that if every family adopted a pet, homeless animals and shelter animals will have someone to take care of them. It calls this a responsibility of the people, like the idea introduced in the topic sentence. So, the answer is D.

Good luck ^^

Serena Williams is famous for revolutionizing women's tennis with her powerful style of play and for winning more Grand Slam singles titles (23) than any other woman or man during the open era.