Which is the best example of a strong conclusion?

In closing, I believe that Greencity Zoo is the best location for our class party. It is not too expensive, and it is close. A party at Greencity Zoo will be practical and fun.
Finally, I think Greencity Zoo is the best choice because I have been there every year. My favorite animals live in the reptile house.
To close, I am in favor of Greencity Zoo. Greencity Zoo is the best place for our year-end party.
My last point is that Greencity Zoo will be the most popular place for a party. Everybody likes animals.