Final answer:
The city in Brazil from which Ana Karolina Mello originates cannot be determined from the provided information, as it does not specifically reference her.
Step-by-step explanation:
The question about Ana Karolina Mello's city of origin in Brazil cannot be definitively answered with the information provided. The references given indicate several departments and universities throughout Brazil, including the Federal University of Ceara in Fortaleza, the Federal University of Viçosa in Viçosa, Minas Gerais, the State University of Rio Grande do Norte in Mossoro, Rio Grande do Norte, and the Federal University of Rio Grande do Sul in Porto Alegre, Rio Grande do Sul. However, none of these references specifically mention Ana Karolina Mello, and therefore, we cannot ascertain from which city in Brazil she hails.