Radioactive isotopes are utilized for all of the following except:
a) Dating fossilized material of once living things.
b) Radiation treatment to slow or stop the development of cancer cells.
c) Labeling regions of the body with radioactivity for special imaging techniques.
d) All of the above.

• A. Dating fossilized material of once living things.
• B. Radiation treatment to slow or stop the development of cancer cells.
• C. Labeling regions of the body with radioactivity for special imaging techniques.
• D. All of the above.

Answer: (D)

Verified step by step guidance

1. Understand the uses of radioactive isotopes: They are commonly used in various scientific and medical applications due to their ability to emit radiation.
2. Consider the application of dating fossilized material: Radioactive isotopes, such as Carbon-14, are used in radiometric dating to determine the age of ancient biological materials.
3. Examine the use in radiation treatment: Radioactive isotopes can be used in medical treatments to target and destroy cancer cells, slowing or stopping their development.
4. Explore the labeling for imaging techniques: Radioactive isotopes are used in medical imaging, such as PET scans, to label and visualize specific areas within the body.
5. Evaluate the statement 'All of the above': This option suggests that radioactive isotopes are used for all the mentioned applications, which is generally true, but the problem asks for an exception.