The most common type of cancer on the list is breast cancer, with 271,270 new cases expected in the United States in 2019. The next most common cancers are lung cancer and prostate cancer.
Answer:
b. fluoroapatite
Explanation:
Fluorapatite -
It is a mineral of phosphorous , with the formula of Ca₅(PO₄)₃F ( calcium fluorophosphate ) .
It is a crystalline hard solid , and the pure mineral does not have any color .
Along with hydroxylapatite , it can be the component of enamel of the tooth .
It is found in shark's and other fishes teeth and present in fluoride exposed human teeth .
Due to the presence of fluorapatite , it does not allow the tooth to decay .