Final answer:
The nurse should identify statement a. "I will wash the ink markings off the radiation area after each treatment" as an indication that the client understands the teaching.
Step-by-step explanation:
The nurse should identify statement a. "I will wash the ink markings off the radiation area after each treatment" as an indication that the client understands the teaching.
Radiotherapy, or radiation therapy, is a common treatment for cancer. It uses ionizing radiation to kill cancerous tissues. During the treatment, ink markings are made on the client's skin to ensure accurate positioning of the radiation beams. Washing off the ink markings can result in inaccurate radiation delivery.