Answer:
Estimating the age of formerly living ancient artifacts
Correct F. Carbon-14
Biological tracer used in PET scans
Correct A. Fluorine-18
Cancer treatments
Correct E. Cobalt-60
Most widely used biological tracer used to detect brain tumors and bone and lung ailments
Correct B. Technitium-99
Detection and treatment of thyroid ailments
Correct D. Iodine-131
Fuel in nuclear reactors
Correct G. Uranium-235
Smoke detectors in homes and industry
Correct C. Americium-241