Q: What is an isotope that is radioactive called?


Read this paragraph and choose the correct option from the provided answers:

Many elements have one or more isotopes that are radioactive. These isotopes are called radioisotopes. An example of a radioisotope is carbon-14.

 Choices:

- isotopes

- matured isotope

- radionuclides

- radioisotopes


A:
radioisotopes