Which of the following counties is located in the Tropical Fanual Zone?

Miami-Dade County is located in the Tropical Fungal Zone, characterized by a warm and humid climate that supports a diverse array of plant and animal life. This zone is influenced by its proximity to the Tropics, leading to higher average temperatures and significant rainfall throughout the year. These conditions are conducive to tropical ecosystems, which include lush vegetation such as palm trees and other tropical flora.

In contrast, the other counties listed—Flagler, Leon, and Calhoun—represent different climatic zones more typical of subtropical or temperate regions in Florida. Flagler County, situated in central Florida, has a humid subtropical climate, while Leon County, located in the northern part of the state, also experiences a subtropical climate with cooler winters. Calhoun County, located in the Panhandle, has a more pronounced seasonal variation in temperature and humidity, aligning it more closely with temperate climate characteristics.

Thus, Miami-Dade's unique climatic features and biodiversity make it the only county in the provided options that falls under the Tropical Fungal Zone.