The iodine-131 radioisotope is most commonly used to:
detect thyroid problems in people
date fossils from organisms that once lived a very long time ago
measure the amount of radiation in an area
treat cancer in patients

I think the correct answer would be detect thyroid problems in people. The iodine-131 radioisotope is used in medical purposes especially in detecting thyroid illnesses. This radioisotope is absorbed into the bloodstream in the GI tract and monitor the thyroid glands in the body.

Your awser would be a acetone

Ithink the answer is d.