Answer: Option A.
Step-by-step explanation:
Radiation protection (radiological protection) for the patients can be defined as the technique to protect patients from the exposure of harmful radiation used in treatments such as gamma or x-rays.
Use of lead apron is one of the most effective ways to protect patient from harmful exposure of radiation. As per the recommendation the thyroid, gonads, and breast are to be shielded during any radiation treatment, thus these organs are covered with lead apron during treatment.
Lead apron is recommended to use in head computed tomography (CT) examinations dental X-rays.
Thus the correct option is A.