The detail from paragraph 5 or 6 that MOST strongly supports the inference that released iguanas could become a bigger problem in southern Florida in the future is If they feel threatened adult iguanas may become aggressive toward people.
Explanation:
The information given in paragraph six include several affectations that people in the neighborhood may have due to the "invasion" of iguanas that ones were their own pets, the problems that are presented are expressed in the present, but the only idea that has a future projection is what would probably happen when these lizards become adults.
