We are exposed to radiation from radioisotopes on a daily basis.
a. true
b. false

A.true (Yes we are! Though the amount is so small that it really has no major effect on us. This radiation does cause some genetic mutations if it encounters the DNA of the cell, but there are many other possible sources of mutations that make it hard to clearly blame a given mutation on radiation at the levels due to ordinary daily exposure.)

Iam not going to tell you