the answer to your question is A
I believe you have 1 or 2 misspelled words but it otherwise the story looks really excellent.
B. a mi tambien it agrees with the person, means in english, "me too"
I believe the answer you are looking for is C. limitaron which means limited. Translated it would be Although they limited the use of automobiles in the city, the air will remain contaminated. I hope this helps
1. Simpáticos
2. Inteligente
3. Guapo
4. Bonita
5. Estudiosa
6. Atléticos
7. Atléticos
8. Artísticos
9. Serios
10. Buenos