It kills cancer cells. It produces healthy cells. It improves immune system function. It prevents many forms of illness in patients.
I gave my students this multiple choice question: Which of the following is a benefit of using radiation as a medical treatment?

Only one answer is correct among these 4 choices:
- It kills cancer cells.
- It produces healthy cells.
- It improves immune system function.
- It prevents many forms of illness in patients.

Could you tell me which one is correct?

It kills cancer cells.