Question

which is one method for detecting cancer?
receiving radiation
taking chemotherapy
doing proper self - exams
getting surgery

Explanation:

Receiving radiation is a treatment for cancer, not a detection method. Taking chemotherapy is also a treatment. Getting surgery is a treatment option. Doing proper self - exams can help detect some cancers early (for example, breast self - exams can help detect breast cancer).

Answer:

Doing proper self exams.