Final answer:
Chert was the variety of fine-grained quartz used by early Native Americans in Florida to make stone tools.
Step-by-step explanation:
The variety of fine-grained quartz used by early Native Americans in Florida to make stone tools was Chert. Chert is a sedimentary rock composed of microcrystalline quartz. It was readily available in Florida and was used by Native Americans for its sharp edges and durability in making tools such as arrowheads and scrapers.
Limestone, quartz, and obsidian are not typically associated with early Native American stone tool making in Florida. Limestone is a sedimentary rock, quartz is a mineral commonly found in rocks but not specifically associated with tool making in Florida, and obsidian is a volcanic glass that is not readily available in Florida.
Learn more about early Native Americans in Florida making stone tools